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/GTLDateTime.h

@@ -0,0 +1,56 @@
+/* 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.
+*/
+
+//
+//  GTLDateTime.h
+//
+
+#import <Foundation/Foundation.h>
+#import "GTLDefines.h"
+
+@interface GTLDateTime : NSObject <NSCopying> {
+  NSDateComponents *dateComponents_;
+  NSInteger milliseconds_; // This is only for the fraction of a second 0-999
+  NSInteger offsetSeconds_; // may be NSUndefinedDateComponent
+  BOOL isUniversalTime_; // preserves "Z"
+  NSTimeZone *timeZone_; // specific time zone by name, if known
+}
+
+// Note: nil can be passed for time zone arguments when the time zone is not
+//       known.
+
++ (GTLDateTime *)dateTimeWithRFC3339String:(NSString *)str;
++ (GTLDateTime *)dateTimeWithDate:(NSDate *)date timeZone:(NSTimeZone *)tz;
+
+- (void)setFromDate:(NSDate *)date timeZone:(NSTimeZone *)tz;
+- (void)setFromRFC3339String:(NSString *)str;
+
+@property (nonatomic, readonly) NSDate *date;
+@property (nonatomic, readonly) NSCalendar *calendar;
+
+@property (nonatomic, readonly) NSString *RFC3339String;
+@property (nonatomic, readonly) NSString *stringValue; // same as RFC3339String
+
+@property (nonatomic, retain) NSTimeZone *timeZone;
+@property (nonatomic, copy) NSDateComponents *dateComponents;
+@property (nonatomic, assign) NSInteger milliseconds; // This is only for the fraction of a second 0-999
+
+@property (nonatomic, assign) BOOL hasTime;
+@property (nonatomic, assign) NSInteger offsetSeconds;
+@property (nonatomic, assign, getter=isUniversalTime) BOOL universalTime;
+
+- (void)setTimeZone:(NSTimeZone *)timeZone withOffsetSeconds:(NSInteger)val;
+
+@end