Initial android package.

Use
  mvn package -pl :simpledance.android -am -P Android
in simpledance.parent to actually translate it. Note that the env
variable ANDROID_HOME must be set. Also note that it is only a stub
at the moment.
Made members of CoordinateInfo public.
Made dispose() public.
Made members of ViewWholePatternResult public.
Moving rendering engine to the core module.