table sensor error,rollback
add sensor dadabases,data post and saved
增加rake db:migrate 生成的文件
Merge branch 'develop' of https://github.com/jerusalemdax/things-of-net-rails into develop
因为是在2.0.0下开发的，所以指定ruby版本为2.0.0
gem增加websocket，并且初始化
clean the cs(database-table-users) in the views
Merge branch 'develop' of https://github.com/jerusalemdax/things-of-net-rails into develop