ios8 share Extension 分享扩展

WWDC 2014 Session笔记 - iOS 通知中心扩展制作入门     转载自http://onevcat.com/2014/08/notification-today-widget/

ios8应用扩展       http://blog.csdn.net/chengwuli125/article/details/39521213

ios8 Day-by-Day--Day2:分享应用扩展     http://www.cocoachina.com/ios/20140919/9686.html

App Extension编程指南（iOS8/OS X v10.10）：扩展类型--Share    http://www.cocoachina.com/ios/20140923/9728.html

iOS 8 Share Extension Safari URL Example（在iOS中分享url的例子）