Merge pull request #1228 from dducharme/next

Adding Game Center support for IOS and OSX
Merge pull request #1229 from dducharme/next

The GameCenterSocial files.
Fixed spelling mistakes in comments.
Updated .gitignore to ignore tools Debug and Release directories.
Merge pull request #1230 from dgough/next

Fixed spelling mistakes.
Fixing the macosx projects.