安装rails

gem install rails

新建blog项目

rails new blog

修改淘宝源

使用bundle下载依赖包

bundle

安装sqlite3

gem install sqlite3
gem install sqlite3-ruby

若执行rails server 提示sqlite错误，参考如下解决方案

[cannot load such file — sqlite3/sqlite3_native (LoadError) on ruby on rails](http://stackoverflow.com/questions/17643897/cannot-load-such-file-sqlite3-sqlite3-native-loaderror-on-ruby-on-rails)


> Find your sqlite3 gemspec file. One example is /usr/local/share/gem/specifications/sqlite3-1.3.7.gemspec or 'C:\Ruby21\lib\ruby\gems\2.1.0\specifications'. You should adjust according with your Rubygem path and sqlite3 version. Edit the file above and look for the following line

> 	s.require_paths=["lib"]
> change it to

> 	s.require_paths= ["lib/sqlite3_native"]