Failed to update HomebrewCocoapods使用中

Warning! PATH is not properly set up, '/Users/qinglinyou/.rvm/gems/ruby-2.0.0-p643/bin' is not at first place.

         Usually this is caused by shell initialization files. Search for 'PATH=...' entries.

         You can also re-add RVM to your profile by running: 'rvm get stable --auto-dotfiles'.

         To fix it temporarily in this shell session run: 'rvm use ruby-2.0.0-p643'.

         To ignore this error add rvm_silence_path_mismatch_check_flag=1 to your ~/.rvmrc file.

Checking requirements for osx.

Installing requirements for osx.

Updating system..........Failed to update Homebrew, follow instructions here:

    https://github.com/Homebrew/homebrew/wiki/Common-Issues

and make sure `brew update` works before continuing.

遇见这个情况的时候   HomeBrew官网 --  https://brew.sh/index_zh-cn

执行： /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

就可以了    

如果最后出现 --- Requirements installation failed with status: 1.     也没啥事   我的最后也出现这个 使用没啥问题