Added Starling and Feathers as submodules.
Moved project source code to 'main' folder.
Removed dpiScale from About screen.
Updated .gitignore. Removed project related files. Added 'out' folder.
Added IntelliJ IDEA project.
Added submodules to VCS.
Switched to AIRSDK 15.
Removed workspace.xml.
Added workspace.xml to .gitignore.
Removed obsolete module from project.