关于cocoapods的安装和使用的基本教程：
http://my.oschina.net/vimfung/blog/182427?fromerr=j7l3DvCG
Specs satisfying the `IQKeyboardManager (~> 3.3.4)` dependency were found, but they required a higher minimum deployment target.
platform :ios pod ‘JSONKit‘, ‘~> 1.5pre‘platform :ios , ‘7.0‘pod ‘JSONKit‘, ‘~> 1.5pre‘原文：http://www.cnblogs.com/ficow/p/4987125.html