title: python 2 support in vim
body: <p>I am trying to set up YouCompleteMe, a code-completion plugin for vim.  When I run vim, it gives me this error message: "YouCompleteMe unavailable: requires python 2.x".  I have the correct version of python installed on my ubuntu machine and this confused me.  After some research, I have found that I needed python2 support in <em>vim</em>, not just on my system (<a href="https://github.com/Valloric/YouCompleteMe/issues/35" rel="noreferrer">https://github.com/Valloric/YouCompleteMe/issues/35</a>).  How can I do this?  I was unable to find a similar answer anywhere.</p>
  
  <p>Thanks in advance for the help!</p>