Fix bug that broke some Styleguide.section() queries when using exact strings.
Fix up some regex replace() calls in lib/kss.js.
Allow "Style guide" in addition to "Styleguide" to start reference section.
Add "weight" option to alter alphabetical sorting of word keys/phrases. #142
Add tests for weight. #142
Add "weight" option to alter alphabetical sorting of word keys/phrases. Fixes #142

Merge branch '142-weight'