+ Added copy-constructor in Rectangle
+ Added toString method, similar to the one from java.awt.Rectangle
+ Added a platform-dependent renderers, so all rendering now happens in those
+ Added some icons, both in PNG and PSD
+ Added dependency for Guava
+ Game now stores current size of window and current screen
+ Added a new mutli-key check in InputHandler (isKeyDown now uses varargs)
+ Added a ClickableRegion to handle clicks at specified points(at some point it may also contain a texture)
+ Added a MyScreen abstract class that handles all basic things all screens handle
+ Added toString method in Point, with format (x, y)
+ Added a utility class

* Fixed input coordinates to be same as render coordinates