removed ignored files
added OS-X target
started work on OSX branch
first translation done. todo: background colour, spinner and curtain view
fixed bg colour issue bugs on iOS
resource loading is a little different now
fixed bugs with image based huds
finished OSX implementation
Merge branch 'osx'
fixed 2 minor bugs introduced by OSX port
cleaned up project structure
improved support for mixed layer and non-layer based hierarchies on OSX
on MAC OS X, HUD now falls back to showing on screen if the window is not visible
replaced defines with typed consts