-Updated project settings to work on Mountain Lion and iOS 6; some warnings remain, though
-Upgraded ARToolKitPlus to v2.1.5 from https://launchpad.net/artoolkitplus
Merge pull request #4 from daffodilistic/master

- Mountain Lion and iOS 6 support

- Upgraded ARToolKitPlus to v2.1.5 from https://launchpad.net/artoolkitplus