title: Not able to update pod. Always getting error GitHub is down
body: <p>I am using <code>pod --version</code> 1.3.1, OS: macOS Sierra (10.12.6)</p>
  
  <p>when I am trying to update pod using the command: </p>
  
  <pre><code>$ pod update
  Update all pods
  Updating local specs repositories
  [!] Failed to connect to GitHub to update the CocoaPods/Specs specs repo - Please check if you are offline, or that GitHub is down 
  </code></pre>
  
  <p>I am always getting above error from yesterday and still not found any proper solution.</p>
  
  <p>Please help. Thanks in advance.</p>