Swift 3 support

[kanishkatn]

Hi,

Could you please add support for swift 3 xcode 8?

[wendyabrantes]

@zhxnlai Hey any plan to add swift 3 supports ?

[AlexHrom]

@zhxnlai Hey)) You plan support swift 3? I look to @tomkroening fork, look like worked. And maybe you add update to cocoapod?