Merge pull request #151 from mono/master

Add explicit conversion to and from CCPoint and CCSize.
fixed bad characters at the top of the file.
Switched back to initWithString because it was not building.
adding WP8 support
Merge branch 'master' of https://github.com/totallyevil/cocos2d-xna
windows phone 8 project for box2d compatible with the wp8 version of the main library.
Rename DrawManager to CCDrawManger.