diff --git a/package.json b/package.json
index 9840470..1aab353 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "dependencies": {
     "async": "~0.9.0",
     "express": "~3.11.0",
-    "socket.io": "~0.9.14"
+    "socket.io": "~2.2.0"
   },
   "license": "MIT"
 }
diff --git a/yarn.lock b/yarn.lock
index 7230976..9977755 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9,16 +9,37 @@ accepts@1.0.3:
     mime "~1.2.11"
     negotiator "0.4.6"
 
-active-x-obfuscator@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/active-x-obfuscator/-/active-x-obfuscator-0.0.1.tgz#089b89b37145ff1d9ec74af6530be5526cae1f1a"
+accepts@~1.3.4:
+  version "1.3.7"
+  resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.7.tgz#531bc726517a3b2b41f850021c6cc15eaab507cd"
   dependencies:
-    zeparser "0.0.5"
+    mime-types "~2.1.24"
+    negotiator "0.6.2"
+
+after@0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/after/-/after-0.8.2.tgz#fedb394f9f0e02aa9768e702bda23b505fae7e1f"
+
+arraybuffer.slice@~0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz#3bbc4275dd584cc1b10809b89d4e8b63a69e7675"
+
+async-limiter@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
 
 async@~0.9.0:
   version "0.9.2"
   resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"
 
+backo2@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/backo2/-/backo2-1.0.2.tgz#31ab1ac8b129363463e35b3ebb69f4dfcfba7947"
+
+base64-arraybuffer@0.1.5:
+  version "0.1.5"
+  resolved "https://registry.yarnpkg.com/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz#73926771923b5a19747ad666aa5cd4bf9c6e9ce8"
+
 base64-url@1:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/base64-url/-/base64-url-1.3.3.tgz#f8b6c537f09a4fc58c99cb86e0b0e9c61461a20f"
@@ -27,9 +48,9 @@ base64-url@1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/base64-url/-/base64-url-1.2.1.tgz#199fd661702a0e7b7dcae6e0698bb089c52f6d78"
 
-base64id@0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/base64id/-/base64id-0.1.0.tgz#02ce0fdeee0cef4f40080e1e73e834f0b1bfce3f"
+base64id@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/base64id/-/base64id-1.0.0.tgz#47688cb99bb6804f0e06d3e763b1c32e57d8e6b6"
 
 basic-auth-connect@1.0.0:
   version "1.0.0"
@@ -39,6 +60,16 @@ batch@0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/batch/-/batch-0.5.1.tgz#36a4bab594c050fd7b507bca0db30c2d92af4ff2"
 
+better-assert@~1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/better-assert/-/better-assert-1.0.2.tgz#40866b9e1b9e0b55b481894311e68faffaebc522"
+  dependencies:
+    callsite "1.0.0"
+
+blob@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
+
 body-parser@1.4.3:
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/body-parser/-/body-parser-1.4.3.tgz#4727952cff4af0773eefa4b226c2f4122f5e234d"
@@ -59,15 +90,27 @@ bytes@1, bytes@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/bytes/-/bytes-1.0.0.tgz#3569ede8ba34315fab99c3e92cb04c7220de1fa8"
 
+callsite@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
+
 commander@1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/commander/-/commander-1.3.2.tgz#8a8f30ec670a6fdd64af52f1914b907d79ead5b5"
   dependencies:
     keypress "0.1.x"
 
-commander@~2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.1.0.tgz#d121bbae860d9992a3d517ba96f56588e47c6781"
+component-bind@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
+
+component-emitter@1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
+
+component-inherit@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/component-inherit/-/component-inherit-0.0.3.tgz#645fc4adf58b72b649d5cae65135619db26ff143"
 
 compressible@1.1.0:
   version "1.1.0"
@@ -139,6 +182,10 @@ cookie@0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.1.2.tgz#72fec3d24e48a3432073d90c12642005061004b1"
 
+cookie@0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
+
 core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
@@ -164,6 +211,18 @@ debug@1.0.2:
   dependencies:
     ms "0.6.2"
 
+debug@~3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
+debug@~4.1.0:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
+  dependencies:
+    ms "^2.1.1"
+
 depd@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/depd/-/depd-0.3.0.tgz#11c9bc28e425325fbd8b38940beff69fa5326883"
@@ -172,6 +231,43 @@ ee-first@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.0.3.tgz#6c98c4089abecb5a7b85c1ac449aa603d3b3dabe"
 
+engine.io-client@~3.3.1:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/engine.io-client/-/engine.io-client-3.3.2.tgz#04e068798d75beda14375a264bb3d742d7bc33aa"
+  dependencies:
+    component-emitter "1.2.1"
+    component-inherit "0.0.3"
+    debug "~3.1.0"
+    engine.io-parser "~2.1.1"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    ws "~6.1.0"
+    xmlhttprequest-ssl "~1.5.4"
+    yeast "0.1.2"
+
+engine.io-parser@~2.1.0, engine.io-parser@~2.1.1:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/engine.io-parser/-/engine.io-parser-2.1.3.tgz#757ab970fbf2dfb32c7b74b033216d5739ef79a6"
+  dependencies:
+    after "0.8.2"
+    arraybuffer.slice "~0.0.7"
+    base64-arraybuffer "0.1.5"
+    blob "0.0.5"
+    has-binary2 "~1.0.2"
+
+engine.io@~3.3.1:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/engine.io/-/engine.io-3.3.2.tgz#18cbc8b6f36e9461c5c0f81df2b830de16058a59"
+  dependencies:
+    accepts "~1.3.4"
+    base64id "1.0.0"
+    cookie "0.3.1"
+    debug "~3.1.0"
+    engine.io-parser "~2.1.0"
+    ws "~6.1.0"
+
 errorhandler@1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/errorhandler/-/errorhandler-1.1.0.tgz#273b0eb850ad103e9a6d63a9981d86f1b9a1202e"
@@ -234,10 +330,24 @@ fresh@0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/fresh/-/fresh-0.2.2.tgz#9731dcf5678c7faeb44fb903c4f72df55187fa77"
 
+has-binary2@~1.0.2:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/has-binary2/-/has-binary2-1.0.3.tgz#7776ac627f3ea77250cfc332dab7ddf5e4f5d11d"
+  dependencies:
+    isarray "2.0.1"
+
+has-cors@1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/has-cors/-/has-cors-1.1.0.tgz#5e474793f7ea9843d1bb99c23eef49ff126fff39"
+
 iconv-lite@0.4.3:
   version "0.4.3"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.3.tgz#9e7887793b769cc695eb22d2546a4fd2d79b7a1e"
 
+indexof@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/indexof/-/indexof-0.0.1.tgz#82dc336d232b9062179d05ab3293a66059fd435d"
+
 inherits@~2.0.1:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
@@ -250,6 +360,10 @@ isarray@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
 
+isarray@2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.1.tgz#a37d94ed9cda2d59865c9f76fe596ee1f338741e"
+
 keypress@0.1.x:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/keypress/-/keypress-0.1.0.tgz#4a3188d4291b66b4f65edb99f806aa9ae293592a"
@@ -274,10 +388,20 @@ methods@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/methods/-/methods-1.0.1.tgz#75bc91943dffd7da037cf3eeb0ed73a0037cd14b"
 
+mime-db@1.40.0:
+  version "1.40.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.40.0.tgz#a65057e998db090f732a68f6c276d387d4126c32"
+
 mime-types@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-1.0.0.tgz#6a7b4a6af2e7d92f97afe03f047c7801e8f001d2"
 
+mime-types@~2.1.24:
+  version "2.1.24"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.24.tgz#b6f8d0b3e951efb77dedeca194cff6d16f676f81"
+  dependencies:
+    mime-db "1.40.0"
+
 mime@1.2.11, mime@~1.2.11:
   version "1.2.11"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.2.11.tgz#58203eed86e3a5ef17aed2b7d9ebd47f0a60dd10"
@@ -302,6 +426,14 @@ ms@0.6.2:
   version "0.6.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.6.2.tgz#d89c2124c6fdc1353d65a8b77bf1aac4b193708c"
 
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+
+ms@^2.1.1:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 multiparty@3.2.9:
   version "3.2.9"
   resolved "https://registry.yarnpkg.com/multiparty/-/multiparty-3.2.9.tgz#c73373ea9c012e7776ce5bc40c936264b6ba2c1e"
@@ -309,10 +441,6 @@ multiparty@3.2.9:
     readable-stream "~1.1.9"
     stream-counter "~0.2.0"
 
-nan@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/nan/-/nan-1.0.0.tgz#ae24f8850818d662fcab5acf7f3b95bfaa2ccf38"
-
 native-or-bluebird@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/native-or-bluebird/-/native-or-bluebird-1.1.2.tgz#3921e110232d1eb790f3dac61bb370531c7d356e"
@@ -321,13 +449,29 @@ negotiator@0.4.6:
   version "0.4.6"
   resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.4.6.tgz#f45faf9fa833ed3ca51250ea9a7ddfc4267a44b3"
 
+negotiator@0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/negotiator/-/negotiator-0.6.2.tgz#feacf7ccf525a77ae9634436a64883ffeca346fb"
+
+object-component@0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/object-component/-/object-component-0.0.3.tgz#f0c69aa50efc95b866c186f400a33769cb2f1291"
+
 on-headers@0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-0.0.0.tgz#ee2817f8344325785cd9c2df2b242bbc17caf4c4"
 
-options@>=0.0.5:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/options/-/options-0.0.6.tgz#ec22d312806bb53e731773e7cdaefcf1c643128f"
+parseqs@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseqs/-/parseqs-0.0.5.tgz#d5208a3738e46766e291ba2ea173684921a8b89d"
+  dependencies:
+    better-assert "~1.0.0"
+
+parseuri@0.0.5:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parseuri/-/parseuri-0.0.5.tgz#80204a50d4dbb779bfdc6ebe2778d90e4bce320a"
+  dependencies:
+    better-assert "~1.0.0"
 
 parseurl@1.0.1:
   version "1.0.1"
@@ -337,10 +481,6 @@ pause@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/pause/-/pause-0.0.1.tgz#1d408b3fdb76923b9543d96fb4c9dfd535d9cb5d"
 
-policyfile@0.0.4:
-  version "0.0.4"
-  resolved "https://registry.yarnpkg.com/policyfile/-/policyfile-0.0.4.tgz#d6b82ead98ae79ebe228e2daf5903311ec982e4d"
-
 proxy-addr@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-1.0.1.tgz#c7c566d5eb4e3fad67eeb9c77c5558ccc39b88a8"
@@ -379,10 +519,6 @@ readable-stream@~1.1.8, readable-stream@~1.1.9:
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
-redis@0.7.3:
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/redis/-/redis-0.7.3.tgz#ee57b7a44d25ec1594e44365d8165fa7d1d4811a"
-
 response-time@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/response-time/-/response-time-2.0.0.tgz#65cb39fd50de2f4ffdbdd285f1855966bd6fcb36"
@@ -429,24 +565,47 @@ serve-static@1.2.3:
     parseurl "1.0.1"
     send "0.4.3"
 
-socket.io-client@0.9.16:
-  version "0.9.16"
-  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-0.9.16.tgz#4da7515c5e773041d1b423970415bcc430f35fc6"
-  dependencies:
-    active-x-obfuscator "0.0.1"
-    uglify-js "1.2.5"
-    ws "0.4.x"
-    xmlhttprequest "1.4.2"
-
-socket.io@~0.9.14:
-  version "0.9.19"
-  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-0.9.19.tgz#490bb5fd0dc54cf002ee04e67fadfc43b848a38f"
-  dependencies:
-    base64id "0.1.0"
-    policyfile "0.0.4"
-    socket.io-client "0.9.16"
-  optionalDependencies:
-    redis "0.7.3"
+socket.io-adapter@~1.1.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/socket.io-adapter/-/socket.io-adapter-1.1.1.tgz#2a805e8a14d6372124dd9159ad4502f8cb07f06b"
+
+socket.io-client@2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/socket.io-client/-/socket.io-client-2.2.0.tgz#84e73ee3c43d5020ccc1a258faeeb9aec2723af7"
+  dependencies:
+    backo2 "1.0.2"
+    base64-arraybuffer "0.1.5"
+    component-bind "1.0.0"
+    component-emitter "1.2.1"
+    debug "~3.1.0"
+    engine.io-client "~3.3.1"
+    has-binary2 "~1.0.2"
+    has-cors "1.1.0"
+    indexof "0.0.1"
+    object-component "0.0.3"
+    parseqs "0.0.5"
+    parseuri "0.0.5"
+    socket.io-parser "~3.3.0"
+    to-array "0.1.4"
+
+socket.io-parser@~3.3.0:
+  version "3.3.0"
+  resolved "https://registry.yarnpkg.com/socket.io-parser/-/socket.io-parser-3.3.0.tgz#2b52a96a509fdf31440ba40fed6094c7d4f1262f"
+  dependencies:
+    component-emitter "1.2.1"
+    debug "~3.1.0"
+    isarray "2.0.1"
+
+socket.io@~2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/socket.io/-/socket.io-2.2.0.tgz#f0f633161ef6712c972b307598ecd08c9b1b4d5b"
+  dependencies:
+    debug "~4.1.0"
+    engine.io "~3.3.1"
+    has-binary2 "~1.0.2"
+    socket.io-adapter "~1.1.0"
+    socket.io-client "2.2.0"
+    socket.io-parser "~3.3.0"
 
 stream-counter@~0.2.0:
   version "0.2.0"
@@ -458,9 +617,9 @@ string_decoder@~0.10.x:
   version "0.10.31"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-0.10.31.tgz#62e203bc41766c6c28c9fc84301dab1c5310fa94"
 
-tinycolor@0.x:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/tinycolor/-/tinycolor-0.0.1.tgz#320b5a52d83abb5978d81a3e887d4aefb15a6164"
+to-array@0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/to-array/-/to-array-0.1.4.tgz#17e6c11f73dd4f3d74cda7a4ff3238e9ad9bf890"
 
 type-is@1.3.1:
   version "1.3.1"
@@ -469,10 +628,6 @@ type-is@1.3.1:
     media-typer "0.2.0"
     mime-types "1.0.0"
 
-uglify-js@1.2.5:
-  version "1.2.5"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-1.2.5.tgz#b542c2c76f78efb34b200b20177634330ff702b6"
-
 uid-safe@1:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/uid-safe/-/uid-safe-1.1.0.tgz#58d6c5dabf8dfbd8d52834839806c03fd6143232"
@@ -492,19 +647,16 @@ vhost@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/vhost/-/vhost-2.0.0.tgz#1e26770bd0fce86c40945591e6f284c6891791e2"
 
-ws@0.4.x:
-  version "0.4.32"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-0.4.32.tgz#787a6154414f3c99ed83c5772153b20feb0cec32"
+ws@~6.1.0:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"
   dependencies:
-    commander "~2.1.0"
-    nan "~1.0.0"
-    options ">=0.0.5"
-    tinycolor "0.x"
+    async-limiter "~1.0.0"
 
-xmlhttprequest@1.4.2:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/xmlhttprequest/-/xmlhttprequest-1.4.2.tgz#01453a1d9bed1e8f172f6495bbf4c8c426321500"
+xmlhttprequest-ssl@~1.5.4:
+  version "1.5.5"
+  resolved "https://registry.yarnpkg.com/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz#c2876b06168aadc40e57d97e81191ac8f4398b3e"
 
-zeparser@0.0.5:
-  version "0.0.5"
-  resolved "https://registry.yarnpkg.com/zeparser/-/zeparser-0.0.5.tgz#03726561bc268f2e5444f54c665b7fd4a8c029e2"
+yeast@0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/yeast/-/yeast-0.1.2.tgz#008e06d8094320c372dbc2f8ed76a0ca6c8ac419"