title: MacVim doesn't start my rails server vim-ruby-debugger
body: <p>I tried adding a good debugger for my rails project and I found vim-ruby-debugger to be the best option for my favourite editor VIM. This works perfectly with ubuntu.</p>
  
  <p>But when I tried configuring it for my Mac the debugger prompts a started message but the rails server is down.</p>
  
  <p>This is what I did.</p>
  
  <ul>
  <li>Installed gem ruby-debug-ide</li>
  <li>Installed plugin vim-ruby-debugger using pathogen</li>
  <li>Modified my .vimrc as </li>
  </ul>
  
  <p>let g:ruby_debugger_progname = 'mvim' <br/>
  let g:ruby_debugger_debug_mode = 1 <br/>
  let g:ruby_debugger_builtin_sender = 0 <br/></p>
  
  <p>When I tried staring the rails as 
  <b>:Rdebugger</b> 
  <br/>it says Debugger started but it doesn't start my server. </p>
  
  <p>Is there anything I need to configure additionally ?</p>