Added somnia command and override feature to let ops watch the world go by
Added SomniaVersion.java, mcmod.info, build.xml.

- Somnia should be built using ant with the following properties passed from the command line:
  - forge (relative location of forge gradle)
  - build_number (this is automatically substituted into SomniaVersion.java before compilation)
Fixed casting issue causing problems when compiling for Java 1.6