title: GitHub Api check number of approvals on protected branch
body: <p>I'm writing a server that should connect to GitHub and merge pull requests, but only if the required number of approvals is met. </p>
  
  <p>For my purpose it's not good enough to automatically merge the branch, I need to be able to track and record the number of approvers before merging.</p>
  
  <p>The github API for pull requests page provides a lot of detail, but doesnt have the number of approvers for a pull request on a protected branch. Is this number accessible somewhere? Is there another site out there that does have this kind of API hook?</p>