title: vim-snippet: after pressing first tab my snippet does not go to next position in snippet
body: <p>It is a while I am using snippet plugin in vim along with snipMate. I am totally happy with it. </p>
  
  <p>My problem is after pressing the first tab (and autocompletion) I can not jump to next position in a snippet. </p>
  
  <p>I guess maybe some setting in vimrc impede snippet from working.
  for example, I want this custom snippet to work properly. It is located in my ./vim/bundle/vim-snippets/snippet/c.snippet</p>
  
  <pre><code># for (custom)
  snippet forr
      for (int ${1:i} = ${2:0}; ${3:$1 &lt; 10}; $1${4:++}){
          ${5}
      }
  </code></pre>
  
  <p>my .vimrc is here:
   <a href="https://github.com/Aznaveh/defaultSetting/blob/master/.vimrc" rel="nofollow noreferrer">https://github.com/Aznaveh/defaultSetting/blob/master/.vimrc</a>
  my .bashrc is also there if any alias caused the problem.</p>