Arrange notification for slack


## 概要
焼けた時の通知でコンテンツを展開
![](http://gyazo.l0o0l.co/img/2014-07-05/818d73fb1f12327995442acf4fc69761.png)
Line is too long. [98/80]<br>Redundant `self` detected.<br>Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping.