vast/sinatra-xsendfile — pull request #2 by alexleutgoeb (2014-02-24 20:14:12+00:00)
Title: Set default content_type for resolving file type

This ensures compatibility with the existing Sinatra send_file helper method (see: https://github.com/sinatra/sinatra/blob/master/lib/sinatra/base.rb#L353 )