Standard installation path for the .awk files

[Photon89]

Hi, thanks for the nice little tool! I just created an AUR package for it: https://aur.archlinux.org/packages/icsp-git

I was a bit confused by the installer which puts the .awk files into a $PATH folder. I'd propose to put the main file into /usr/bin and the .awk files into /usr/share/icsp. This way, the .awk files won't show up in bash autocomplete. I actually changed $ICSP_DIR to /usr/share/icsp in the AUR package.