iOS-CocoaPodsのインストール

**一.iOS最新版CocoaPodsのインストールプロセス**

    1.  RVM

    (1)  RVM                         curl -L get.rvm.io | bash -s stable
    (2)      ，  rvm   source ~/.rvm/scripts/rvm
    (3)                   rvm -v
    
    2. RVM  Ruby
    
    (1)    ruby                 ruby -v    
    (2)     ruby              rvm list known  
    (3)  ruby 2.2.4(        ，     ，      )   rvm install 2.2.4
    
    3.  Ruby  
    
    (1)                        gem sources -l  
    (2)                        gem sources --remove https://rubygems.org/ (            )
    (3)                        gem sources -a https://gems.ruby-china.com/ 
                                                ：        homebrew，        opensll  ，        
    (4)                gem sources -l
    
    4.  CocoaPods
    
    (1)      :                     sudo gem install cocoapods
       OS X EL Capitan   :      sudo gem install -n /usr/local/bin cocoapods
    (2)                       pod setup
    (3)      ,        ,   cd ~/.cocoapods/   ，   du -sh *        
    a.               ,        master   sudo rm -fr ~/.cocoapods/repos/master 
    b.  pod setup   ,           ,      ,      4G    mac  
    c. 353M,  4G           ,    2-3  ,     900 M
    (4)     ,      ,             pod search AFNetworking
    (5)     Podfile         cd      vim Podfile
    (6)  Podfile    
    
    platform :ios, '8.0'
    use_frameworks!
    target '   ' do
    pod "AFNetworking","3.0.4"
    end

    5.     cocoapods  ：sudo gem install -n /usr/local/bin cocoapods --pre

二.rubyのアップグレード方法

    http://blog.csdn.net/lissdy/article/details/9191351

    1、   RVM
    RVM:Ruby Version Manager,Ruby     ，  Ruby      Gem   (gemset)
          : curl -L get.rvm.io | bash -s stable 
                    RVM。            
        source ~/.bashrc  
        source ~/.bash_profile  

            
          : rvm -v
        

    2、 RVM  Ruby
        #    ruby    
             ruby -v  
                ruby 1.8.7  
        #     ruby    
              rvm list known  
        #  ruby 2.3.0  
               rvm install 2.3.0