Merge pull request facebookarchive#491 from leonar15/5.0-dev

added a getEmail() method for GraphUser objects

Author: gfosco

src/Facebook/GraphNodes/GraphUser.php

@@ -90,6 +90,16 @@ public function getLastName()
         return $this->getField('last_name');
     }
 
+    /**
+     * Returns the email for the user as a string if present.
+     *
+     * @return string|null
+     */
+    public function getEmail()
+    {
+        return $this->getField('email');
+    }
+
     /**
      * Returns the gender for the user as a string if present.
      *