第一次安裝失敗是由於Homebrew一直安裝不成功，遂去http://brew.sh/index_zh-cn.html官網
通過
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
復制到終端中直接安裝，安裝成功后再通過RVM安裝Ruby還是失敗，根據提示輸入brew doctor查找原因，發現時Xcode版本過低，更新安裝之后並運行Xcode，再通過rvm install 2.3.0
安裝了Ruby，安裝Ruby成功后輸入按照常規步驟到
pod repo remove master出現如下錯誤
[!] repo master does not exist
嘗試更換源，輸入如下
pod repo add master http://git.oschina.net/akuandev/Specs.git出現如下錯誤
[!] To setup the master specs repo, please run `pod setup`.
切換源失敗，根據提示輸入pod setup
剛開始嘗試很多次，都是如下錯誤
Setting up CocoaPods master repo
[!] /usr/local/bin/git clone https://github.com/CocoaPods/Specs.git master
Cloning into 'master'...
error: RPC failed; curl 56 SSLRead() return error -9806
fatal: The remote end hung up unexpectedly
fatal: early EOF
fatal: index-pack failed
通過網絡查詢很久后死馬當活馬醫，很多人遇到
error: RPC failed; curl 56 SSLRead() return error -36
輸入
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer就能pop setup成功
遂在終端輸入如上
再進行pod setup，結果如下
Setting up CocoaPods master repo
CocoaPods 1.1.0.rc.2 is available.
To update use: `sudo gem install cocoapods --pre`
[!] This is a test version we'd love you to try.
For more information, see https://blog.cocoapods.org and the CHANGELOG for this version at https://github.com/CocoaPods/CocoaPods/releases/tag/1.1.0.rc.2
Setup completed 有了綠色的Setup completed即可
最后成功安裝好Ruby
注：確保安裝了Xcode命令行工具，忘記是在哪一步安裝了此工具，在終端輸入
xcode-select --install 即可安裝，