Adds basic mcmod.info and a gradle wrapper for user support

The first commit adds a basic gradle wrapper.  This allows users who haven't installed Gradle to use all gradle commands such as "setupDevWorkspace" etc.

The second commit adds a mcmod.info.  This file is used to allow more information to show up when you look at the mod in the "Mods" menu in the main minecraft screen.  This is easily customized.