title: How to customize GIDSignInButton login Image in new Google+ iOS SDK?
body: <p>In order to connect to google plus in my iOS app i'm using GIDSignInButton from <a href="https://developers.google.com/identity/sign-in/ios/" rel="noreferrer"> latest Google Plus SDK for iOS.</a></p>
  
  <p>I want to use my own image and label for login button. The problem is I don't see anywhere how to customize it. I am able to do it in previous SDK versions. </p>
  
  <p>Any solutions????</p>