Merge pull request #26 from Jefferson49/Bugfix-getDefaultScopes

Bugfix: Typo in scope 'user:email' instead of 'user.email', fixes #24

src/Provider/Github.php

@@ -90,7 +90,7 @@ protected function fetchResourceOwnerDetails(AccessToken $token)
     protected function getDefaultScopes()
     {
         return [
-            'user.email',
+            'user:email',
         ];
     }