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/GTLUploadParameters.h

@@ -0,0 +1,57 @@
+/* Copyright (c) 2011 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.
+ */
+
+//
+//  GTLUploadParameters.h
+//
+
+#import <Foundation/Foundation.h>
+
+#import "GTLDefines.h"
+
+@interface GTLUploadParameters : NSObject <NSCopying> {
+ @private
+  NSString *MIMEType_;
+  NSData *data_;
+  NSFileHandle *fileHandle_;
+  NSURL *uploadLocationURL_;
+  NSString *slug_;
+  BOOL shouldSendUploadOnly_;
+}
+
+// Uploading requires MIME type and one of
+// - data to be uploaded
+// - file handle for uploading
+@property (copy) NSString *MIMEType;
+@property (retain) NSData *data;
+@property (retain) NSFileHandle *fileHandle;
+
+// Resuming an in-progress upload is done with the upload location URL,
+// and requires a file handle for uploading
+@property (retain) NSURL *uploadLocationURL;
+
+// Some services need a slug (filename) header
+@property (copy) NSString *slug;
+
+// Uploads may be done without a JSON body in the initial request
+@property (assign) BOOL shouldSendUploadOnly;
+
++ (GTLUploadParameters *)uploadParametersWithData:(NSData *)data
+                                         MIMEType:(NSString *)mimeType;
+
++ (GTLUploadParameters *)uploadParametersWithFileHandle:(NSFileHandle *)fileHandle
+                                               MIMEType:(NSString *)mimeType;
+
+@end