Without this line, I was getting ridiculous errors from Redcarpet tests:

```
TypeError: Logger is not a class
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/pygments.rb-0.4.2/lib/pygments/popen.rb:5:in `require'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/pygments.rb-0.4.2/lib/pygments/popen.rb:5:in `<top (required)>'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/pygments.rb-0.4.2/lib/pygments.rb:1:in `require'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/pygments.rb-0.4.2/lib/pygments.rb:1:in `<top (required)>'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown/redcarpet_parser.rb:44:in `require'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown/redcarpet_parser.rb:44:in `load_pygments'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown/redcarpet_parser.rb:7:in `initialize'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown.rb:13:in `new'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown.rb:13:in `setup'
    /Users/parker/code/jekyll/lib/jekyll/converters/markdown.rb:38:in `convert'
    /Users/parker/code/jekyll/test/test_redcarpet.rb:30:in `block (2 levels) in <class:TestRedcarpet>'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/shoulda-context-1.0.2/lib/shoulda/context/context.rb:398:in `call'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/shoulda-context-1.0.2/lib/shoulda/context/context.rb:398:in `block in create_test_from_should_hash'
    /Users/parker/.rbenv/versions/1.9.3-p362/lib/ruby/gems/1.9.1/gems/mocha-0.10.5/lib/mocha/integration/mini_test/version_230_to_262.rb:28:in `run'
```