安装步骤：
gem install shenzhen error：Could not find a valid gem 'shenzhen' (>= 0), here is why:Unable to download data from http://ruby.taobao.org/ - bad response Not Found 404 (http://ruby.taobao.org/latest_specs.4.8.gz)
gem sources -l gem sources --remove https://rubygems.org/ gem sources -a https://ruby.taobao.org/ gem sources -l error:While executing gem ... (Gem::FilePermissionError) You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
sudo gem update --system 升级成功后会提示: RubyGems system software updated
sudo gem install shenzhen error:While executing gem ... (Errno::EPERM)Operation not permitted - /usr/bin/commander
sudo gem install -n/usr/local/bin shenzhen
6.git clone https://github.com/winter20168/winter20168.github.io.git
另外打包时会出现：
xcrun:error:unabletofindutility"PackageApplication...
http://blog.csdn.net/itiapp_home/article/details/70241011
