Merge pull request #4 from silentdth/libgdx

Fix relative root for .jar
Merge pull request #6 from silentdth/libgdx

Added support for 'instant action' on Windows OS
Keep up with new RVM

RVM uses a new config file nowadays.
Specify binary mode for saved game file. Fixes #5.
Merge remote-tracking branch 'upstream/libgdx' into libgdx