Add support for Swift 3/Xcode 8

[Adam Debono]

I've attempted to convert the project over using the Xcode 8 refactor tool, and fixed a few things manually. I am having trouble with the MockingjayAsyncProtocolTests. Those tests will show a number 2-second timeout messages, and then just seems to sit there and not won't complete the test. All of the other tests pass fine.

My code is on my fork, adamdebono/Mockingjay@bfc0e71

(Also I have pointed URITemplate to my own fork which has also been updated to Swift 3 as well)

[Anthony Miller]

@kylef I know you're probably very busy, but is there any chance we can get a this done soon?

Thanks!

[Denis Lebedev]

Any update on this?

[Kyle Fuller]

Release 2.0.0 which has Swift 3 support.