title: sublime text : open containing folder
body: <p>I'm working on some file in my sublime text 2 editor, and I want to open a folder in which that file resides. </p>
  
  <p>I know there is a 2 step procedure to do this already</p>
  
  <pre><code>step 1: right click and reveal in sidebar (ctrl+shift+r)
  step 2: right click on the same file in sidebar and click open containing folder.
  </code></pre>
  
  <p>I would like to know if there is only one shortcut key to do the same. This is something that I use quite often.</p>