Make mod installs more "Intelligent"

[finalsliver]

had fun yesterday getting BTW launching in MultiMC for a user. but since then I've noticed a few mods that need re-zipping to use in the method MultiMC uses

was wondering if a script or something could be written to do this for users as many seem unable to do so themselves.

(essentially it will reduce forum 'complaints' traffic)

[Forkk]

I'll try to make mod installs more "intelligent".