删除TestUnit
Merge branch 'master' into develop
添加RSpec的gem
生成安全码
生成RSpec测试
Merge branch 'develop'
Update Gemfile.lock for Heroku
Add precompiled assets for Heroku
Add a StaticPages controller
第一个测试
测试驱动开发TDD
调用模板文件中定义变量的问题
解决变量调用问题
Merge branch 'Ch03-StaticPages' into develop
Merge branch 'develop'