title: Google Plus Login without Google Play Services
body: <p>I'm developing an app for tablets that may or may not have Google Play Services. I've already setup Google+ login for devices that DO have Google Play Services, but I haven't found a relatively easy way to implement non-Google Play Services Google+ login. </p>
  
  <p>I've implemented OAuth 2.0 login for a wordpress app I did a while back, and I imagine the process will be very similar for this, but I'm mainly looking for solutions that already exist. </p>
  
  <p>Thanks</p>