Merge pull request #76 from ChrisGrant/bugs

Fixed #72.
Merge pull request #77 from ChrisGrant/bugs

Fixed #73.
Fixed #68. Added tint colour to the navigation bar. Incremented the JSON version number to 1.4. It is an optional property so it shouldn't be a breaking change.
Fixed compile error in the visual test.
Merge pull request #78 from ChrisGrant/master

Fixed compile error in the visual test.
Merge pull request #79 from ChrisGrant/navbar

Fixed #68.
Fix for iOS6 compatability.