updates for PSM build.
Merge pull request #347 from Cocos2DXNA/PSM_FIXES

updates for PSM build.
PSM changes to make the PSM run get farther into the run process.
Merge branch 'master' of https://github.com/Cocos2DXNA/cocos2d-xna
Merge pull request #350 from gena-m/master

added class CCTask
Merge pull request #351 from gena-m/master

fixed XBOX compilation
Merge pull request #352 from gena-m/master

use StringBuilder.Length = 0 instead StringBuilder.Clear()
Fixed the name of the test app on WP7
tracking as a branch now
typographic fix
updated the submodule for MonoGame
how to update the monogame submodule
Added the marketing spiel
Merge pull request #355 from gena-m/master

try fixed http://cocos2dxna.codeplex.com/discussions/458785
some new images for the monogame site.
Merge branch 'master' of https://github.com/Cocos2DXNA/cocos2d-xna
Merge pull request #356 from gena-m/master

added CCSpriteFontCache.FontScale
changed to be more pretty
remove unused definitions