Update PKPass class, add getPassThatWasSet function
https://github.com/stepio/jpasskit/issues/3
Add support of other forms of RGB triplets
https://github.com/stepio/jpasskit/issues/4
iOS7 additional validations & cleanup
https://github.com/stepio/jpasskit/issues/5
Use predefined constant "Boolean.FALSE" instead of "false" value
https://github.com/stepio/jpasskit/issues/5
Merge pull request #29 from stepio/master

iOS7 additional validations + code cleanup + minor enhancements
Thanks to stepio