Version 0.1.7: Refactoring of OverlayMediator

OverlayController is actually more Mediator. It keeps track of current OverlayItem and triggers toggling of marker highlighting. In order to provide clear code the name has been changed to OverlayMediator. The singleton variable now is called singleton. And static method getOverlayController is now getInstance(). Commit details on Github: Version 0.1.7 + Added OverlayMediator

• Refactoring
• Versions