Merge pull request #330 from gena-m/master

GraphicsDevice logic move into CCDrawManager
Merge pull request #331 from gena-m/master

remove unused DirtyLabels
switched to use our own fork of monogame.
error message typo fix.
Merge pull request #332 from gena-m/master

Added MultiTouch test
moved to develop branch
use predefined SamplerState
XNA: reload assets
use cached asset path
restore DesignResolution after reset device
restore DesignResolution after reset device
fixed CCLabelAtlas size
restore CCSpriteFrameCache compatibility
registration ContentTypeReaders move to CCContentManager