switched nickname to pull from facebook username instead of the end of the users profile url

oa-oauth/lib/omniauth/strategies/facebook.rb

@@ -45,7 +45,7 @@ module OmniAuth
 
       def user_info
         {
-          'nickname' => user_data["link"].split('/').last,
+          'nickname' => user_data["username"],
           'email' => (user_data["email"] if user_data["email"]),
           'first_name' => user_data["first_name"],
           'last_name' => user_data["last_name"],