DEVEXP-132, DEVEXP-95 Version flag updates and return EXIT_SUCCESS

- updated approach to versioning to match other python libraries
- fixer version flat issue that was reporting build failures
- fixed return values for uav-ios
- updated version number
Merge pull request #20 from urbanairship/DEVEXP-132-Versioning

DEVEXP-132, DEVEXP-95 Version flag updates and return EXIT_SUCCESS