Don't need the ID this is for 1.7 use /minetweaker hand if you want something with meta or NBT otherwise do /minetweaker dump for everything in the pack you are playing. Organized by mod alphabeticallyAlso, any trick to getting an items ID. As far as I know there is none.
Double Ninja's/minetweaker hand
http://www.curse.com/mc-mods/minecraft/221140-version-checkerbare bones for mod done. I am looking at version checking and GUI making...IDK if I can do version checking by myself (seems pretty complex) but the enable/disable I believe will be much easier
I have no idea what a pull request is, I don't honestly understand what Github is
Oh yeah this has a basic run-down of how to do it at the bottom