zhao-zhu/blog_1 — comment on commit b2d32c37ef5ff673a3039ec137c92c1cd2dd1f63
File:  line 0
By zhaoguobin:

1.增加```comment```，执行命令：

```
rails g model Comment commenter:string body:text post:references
```

2.新建数据表：

```
rake db:migrate
```