title: How do I tell RubyMine the file type when the file has no extension?
body: <p>This seems like it should be easy.</p>
  
  <p>I'm creating a CLI command gem, so the command is in <code>bin/gem_name</code> which has no <code>.rb</code> extension. When I try to edit that file in RubyMine, it doesn't give it a language mode (sorry, don't know the proper term) to make syntax highlighting and other niftyness in RubyMine work.</p>
  
  <p>How can I tell RubyMine that this is, in fact, a Ruby file?</p>