Support Flow

[minoki]

Emitting type definitions for Flow shouldn't be too hard.

According to Flow docs, the name of type definition files should be *.js.flow.

Unfortunately I don't use Flow myself, and I'm not willing to implement a feature that nobody is going to use. So if you use Flow and want this feature implemented, please comment!

[stereobooster]

There is https://github.com/justinwoo/purescript-bismuth. Also checkout this collection https://github.com/stereobooster/type-o-rama#purescript