title: Implement Google+ Sign-In with React Native
body: <p>I'm wanting to integrate G+ Sign In (as per <a href="https://developers.google.com/+/mobile/ios/sign-in" rel="noreferrer">https://developers.google.com/+/mobile/ios/sign-in</a>) in a React Native app. I have Facebook Sign In working via <a href="http://brentvatne.ca/facebook-login-with-react-native/" rel="noreferrer">http://brentvatne.ca/facebook-login-with-react-native/</a> which is working perfectly, but I'm not sure what to do at this point of the G+ docs: </p>
  
  <blockquote>
    <p>In your view controller's .h file, import GooglePlus/GooglePlus.h, and declare that this controller class implements the GPPSignInDelegate protocol</p>
  </blockquote>
  
  <p>If anyone could provide some pointers/code samples? </p>
  
  <p>Thanks!</p>