[project] issue #4: osx support
[pod] issue #4: add osx as supported platform
[travis] try to configure Travis to test on OSX
[project] updated CHANGELOG
[project] fixed pod dependencies and Travis CI
[project] set pod version to 0.27.1 for travis (waiting for https://github.com/CocoaPods/CocoaPods/issues/1549 to be fixed) + some other minor issues
Merge pull request #8 from KptainO/osx

Osx