Added support for the Minecraft mod (http://bit.ly/1qBklHF)

This adds support for the minecraft mod VersionChecker, this mod requires you to host a file on github (as you already do with your current version setup) and link it in the Reference file.  Then all you need to do to update the mod is change the "ModVersion" in VersionChecker.json and it will automatically offer an update to all users that have the mod installed.
The tread for the mod is -> http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/2091981-version-checker-auto-update-mods-and-clean