title: sublimerepl getenv failing
body: <p>I'd like to use the SiblimeREPL package with Sublime Text.  When I try to start a REPL, I get</p>
  
  <pre><code>SublimeREPL: obtaining sane environment failed in getenv()
  Check console and 'getenv_command' setting
  WARN: Falling back to SublimeText environment
  </code></pre>
  
  <p>This happens regardless of which REPL I try to start.  (I tried Ruby, Python, and Clojure.)  I tried Sublime Text 2 and Sublime Text 3 with the same results.  This is on Mac OS X, if that matters.</p>
  
  <p>I looked in the package settings, where I see</p>
  
  <pre><code>"getenv_command": ["/bin/bash", "--login", "-c", "env"],
  </code></pre>
  
  <p>If I run "/bin/bash --login -c env" at a Terminal prompt, I get my environment listed.</p>
  
  <p>What do I need to change in order to get a successful getenv_command?</p>