Thanks for the pull! While undocumented, there is also SwiftPM support. One concern, however, is that Swift 3 (and Xcode 8, if you're developing for an Apple platform) is a prerequisite to using this project, so that should probably be documented as well—a user's Swift 2 installation experience is going to be a confusing one.

For what it's worth, this project was built as a tech demo for live coding an interesting pattern (formatter combinators) at a local meet-up 😄 If-slash-when I start using this in applications and libraries, these kinds of maintenance responsibilities would take more of a priority than they do now.

Got it. No problem! 😄