title: There is no activate when I am trying to run my virtual env
body: <p>1) I installed virtualenv using pip.<br>
  2) I ran the command <code>virtualenv venv</code><br>
  3) Then I ran <code>source venv/bin/activate</code> but it says that there is no such file or directory.  </p>
  
  <p>When I <code>cd</code> into <code>venv/bin</code> I find 3 things - python, python 2.7, and python 3.5.  Does anyone know the problem?</p>