Support for Grape ~> 3.0 / New release

Hi, 

I would like to upgrade my Grape to version ~> 3.0 however doing so I can no longer combine it with grape-swagger, due to version mismatch.

grape-swagger >= 2.0.0 depends on grape >= 1.7, < 3.0

Will there be a release of a new version of grape-swagger soon?