basic layout with i18n
Ignore rvm configuration file
add devise to Gemfile
add alert notice to layout
rails generate devise users
add rails-i18n to Gemfile
add devise.zh-CN.yml
translite for model user
migrate for user
rails generate devise:views
设置退出登录链接
增加用户昵称注册
显示用户昵称和退出链接
登录用户和非登录用户到不同的页面
Merge branch 'devise'