Update omniauth-google-oauth2 gem

Udate doc

Gemfile.lock

@@ -129,7 +129,7 @@ GEM
     factory_girl_rails (4.3.0)
       factory_girl (~> 4.3.0)
       railties (>= 3.0.0)
-    faraday (0.8.8)
+    faraday (0.8.9)
       multipart-post (~> 1.2.0)
     faraday_middleware (0.9.0)
       faraday (>= 0.7.4, < 0.9)
@@ -234,7 +234,7 @@ GEM
       activesupport (>= 4.0.1)
       haml (>= 3.1, < 5.0)
       railties (>= 4.0.1)
-    hashie (2.0.5)
+    hashie (2.1.2)
     hike (1.2.3)
     hipchat (0.14.0)
       httparty
@@ -243,7 +243,7 @@ GEM
     httparty (0.13.0)
       json (~> 1.8)
       multi_xml (>= 0.5.2)
-    httpauth (0.2.0)
+    httpauth (0.2.1)
     i18n (0.6.11)
     ice_nine (0.10.0)
     jasmine (2.0.2)
@@ -264,7 +264,7 @@ GEM
     jquery-ui-rails (4.2.1)
       railties (>= 3.2.16)
     json (1.8.1)
-    jwt (0.1.8)
+    jwt (0.1.13)
       multi_json (>= 1.5)
     kaminari (0.15.1)
       actionpack (>= 3.0.0)
@@ -311,9 +311,9 @@ GEM
     omniauth-github (1.1.1)
       omniauth (~> 1.0)
       omniauth-oauth2 (~> 1.1)
-    omniauth-google-oauth2 (0.2.1)
-      omniauth (~> 1.0)
-      omniauth-oauth2
+    omniauth-google-oauth2 (0.2.5)
+      omniauth (> 1.0)
+      omniauth-oauth2 (~> 1.1)
     omniauth-oauth (1.0.1)
       oauth
       omniauth (~> 1.0)

doc/integration/google.md

@@ -13,6 +13,10 @@ To enable the Google OAuth2 OmniAuth provider you must register your application
 
 1. Select "APIs & auth" in the left menu.
 
+1. Select "APIs" in the submenu.
+    - Enable `Contacts API`
+    - Enable `Google+ API`
+
 1. Select "Credentials" in the submenu.
 
 1. Select "Create New Client ID".