By setting the `highlighter` setting to `rouge` you can now easily
highlight your code with it instead of relying on Pygments. However,
Jekyll doesn't depend on Rouge explicitly, you will need to install it
or add it to your Gemfile.
The documentation has been updated accordingly.
After several page build fails, this seems to have fixed up the following error:
lib/jekyll/excerpt.rb:108:in `partition': type mismatch: NilClass given (TypeError)
This is the big site redesign by @cobyism. To work with the new
site deployment mechanism, it is being copied from the gh-pages
branch of that PR into the existing site dir. Before we finally
deploy the new site, we should remember to merge #583 so that we
keep all the history from that PR.
