Swift 3 compatibility

[Lucas Farah]

Hey, I'd love to see this lib available in Swift 3 so I can implement it in my project.

Thanks 😄

[ChildhoodAndy]

@lfarah Hi, I'm very glad now we can rock Swift3 in our project.

See b4d1e94. If there is any problem, please let me know.

Cheers:]

[Lucas Farah]

Thank you so much, @dabing1022! 🎉 🎉 🎉 🎉