title: E492 during clang_complete installation for vim
body: <p>I tried to install clang_complete for vim.
  I have downloaded source and when I try to make it, it gives me this:</p>
  
  <pre><code>E492: Not an editor command %MkVimball! clang_complete.vmb
  </code></pre>
  
  <p>any idea?</p>