Google Admob iOS SDK 2015 02 03

Admob iOS SDK 7.0.0 版,改进对iOS8的支持。•Dropped support for iOS 5. •Released SDK as a framework. •Removed dependency on the -ObjC linker flag. •Improved ad loading time on iOS 8. •Added requestAgent property to GADRequest. Third-party integrations should set this property to denote the platform from which