安装流程：
- 确认
ruby是否安装
$ruby -v
ruby 2.0.0p648 (2015-12-16 revision 53162) [universal.x86_64-darwin15]
- 更换
gem源:http://rubygems-china.oss.aliyuncs.com
$gem sources -l
*** CURRENT SOURCES ***
https://rubygems.org/
$gem sources --remove https://rubygems.org/
https://rubygems.org/ removed from sources
$gem sources -a http://rubygems-china.oss.aliyuncs.com
- 安装
cocoapods
$sudo gem install cocoapods
...gems installed
下面这步很容易出错
pod setup
或者
pod search FMDB
Creating search index for spec repo 'master'.. Done!
