Merge pull request #115 from samtstern/master

Fix issue #114
Replaced String resource errorCode with the result from GooglePlayServicesUtil.isGooglePlayServicesAvailable() which is what is actually needed.
Merge pull request #7 from playgameservices/master

Merging updates into personal fork
Merge pull request #117 from william-ferguson-au/issue-116

Fix for issue-116
Adding downloading the user's avatar and displaying their name and email address.
Adding downloading the user's avatar and displaying their name and email address. Minor revisions per comments.
Merge pull request #118 from claywilkinson/master

BeGenerous: Adding displaying the player's image, name and email address
fix NPE in GameHelper.resolveConnectionResult
Merge pull request #119 from alex-dorokhov/master

fix NPE in GameHelper.resolveConnectionResult