Sharing on Facebook, Twitter and Google+

[FIXED]     Font of navbar.
[FIXED]     A few compile fixes.
[IMPROVED]  Made properties nonatomic.
[ADDED]     Support for facebook, twitter and google+ sharing.

External/google-plus-ios-sdk/OpenSource/GTL/GTLPlus/GTLPlusConstants.m

@@ -0,0 +1,37 @@
+/* Copyright (c) 2012 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+//  GTLPlusConstants.m
+//
+
+// ----------------------------------------------------------------------------
+// NOTE: This file is generated from Google APIs Discovery Service.
+// Service:
+//   Google+ API (plus/v1moments)
+// Description:
+//   The Google+ API enables developers to build on top of the Google+ platform.
+// Documentation:
+//   http://developers.google.com/+/api/
+
+#import "GTLPlusConstants.h"
+
+// Authorization scope
+NSString * const kGTLAuthScopePlusMe            = @"https://www.googleapis.com/auth/plus.me";
+NSString * const kGTLAuthScopePlusMomentsWrite  = @"https://www.googleapis.com/auth/plus.moments.write";
+NSString * const kGTLAuthScopePlusUserinfoEmail = @"https://www.googleapis.com/auth/userinfo.email";
+
+// Collection
+NSString * const kGTLPlusCollectionVault = @"vault";