increments/qiita-markdown — pull request #3 by yujinakayama (2014-12-25 06:48:25+00:00)
Title: Fix error while rendering links with absolute URI inside of <sup> tag

Without this fix it raised the following error:

```
Nokogiri::CSS::SyntaxError:
unexpected '//' after ':'
# ./lib/qiita/markdown/filters/footnote.rb:8:in `block in call'
# ./lib/qiita/markdown/filters/footnote.rb:6:in `call'
# ./lib/qiita/markdown/processor.rb:37:in `call'
```