bug fixes
removed transform field from GameObject. You can just alter the GameObject's transform directly on the GameObject. No need for the extra layer.
fixed memory leaks
lowered source compatibility to 1.6 to facilitate android.
added ability to cleanup assetmanager, unloading all loaded assets and freeing any memory.
added ability to cleanup scenemanager, disposing of all scenes, freeing any memory. Also added api to get the name of the start scene.
added ability to cleanup the scene, disposing of any Disposable objects and freeing memory. Also, a Scene's Stage instance is now initialized properly
added desktop module for the desktop client.
included desktop module in build process.
added ability to build either standalone or from the editor.
gradle build support
Desktop games are now build successfully. Still need to finish implementing build progress dialog though.
dialog shown during project building with progress bar and some text telling the user what is going on currently.
fixed bug where build dialog wasn't being resized properly when the text was updated.
Merge pull request #72 from jonbonazza/master

bunch of stuff that probably should have had separate PRs.