原文链接地址：
http://www.cocoachina.com/ios/20161125/18183.html
PS:
跟原文不一样的操作，
执行install-appledoc.sh的时候不需要root权限
运行老是报以下错误：
!> xcrun: error: unable to find utility "docsetutil", not a developer tool or in PATH
docsetutil failed to index the documentation set, continuing with what was indexed...
appledoc version: 2.2.1 (build 1334)
Generation step 4/5 failed: GBDocSetInstallGenerator failed generating output, aborting!
Documentation set was installed, but couldn't reload documentation within Xcode.
Expected end of line but found identifier.
Command /bin/sh failed with exit code 2
实际上已经创建成功，在项目目录下就能看到 com.meicai.MCPUtils.docset 显示包内容 Contents->Resources->Documents->index.html
