title: on mac os sierra, stuck on "Setting up CocoaPods master repo"
body: <p>After moving to mac os sierra, I completely formatted my mac now I'm facing problem to install cocoapods, every time I run <code>sudo gem install cocoapods --pre</code>
  every thing installed well, and when I try to install a pod, the terminal stack on <code>Setting up CocoaPods master repo</code> 
  . 
  Already updated the system with <code>sudo gem update --system</code> and still got the same problem, searched online to found old answers to use <code>pod install --verbose</code></p>
  
  <p>Ss I found in <a href="https://stackoverflow.com/questions/21022638/pod-install-is-staying-on-setting-up-cocoapods-master-repo">THIS</a> answer fail again tells to install it manually.</p>
  
  <p>NOTE : I have the latest version of 'Command Line Tools'. Any suggestion or how to install master repo manually?</p>