lepture/nico — pull request #48 by hotoo (2013-12-01 10:06:39+00:00)
Title: Add build markdown file error info.

当编译 markdown 文件出现错误时，打印相关 markdown 文件信息。

但是最后会多打印一行信息， @lepture 可以看看是不是有更好的实现方式。

```
$ make build

nico: 0.5.0
load: nico.js
build error: content/post/2013/multi-ssh-key-for-git.md
Assertion failed: (md->work_bufs[BUFFER_BLOCK].size == 0), function sd_markdown_render, file ../sundown/src/markdown.c, line 2528.
```