Merge pull request #22 from Pyrdacor/master

Improved documentation in string_format.h
Removed clanGameIDE
Removed clanPhysics2D
Removed clanCompute
Removed clanGUI
Removed clanGameIDE include
Removed unused header
Removed clanCSSLayout
Removed clanCSSLayout examples and tests
Removed clanGameIDE resources
Removed clanGUI resources
Removed clanSWRender
Removed Roadgeddon example (no clanPhysics2D)
Removed clanGUI tests and utils
Removed clanDatabase and clanSqlite
Removed clanScene3D and clanPhysics3D
Removed db example
Updated configure
Merge pull request #23 from dpjudas/master

Remove low interest ClanLib modules
Updated OS X target