代码显示格式

[happypeter]

http://railscasts.com/episodes/417-foundation?view=asciicast

优先显示的还是完整文件，而不应该是 diff 。

diff 可以是一种备选格式，用 tabs/switch 形式提供出来。

[happypeter]

嗯，现在手动填代码。