add html snippets, add syntax highlighting styles, add line numbers, fix spacing on media patter, tweak the styleguide grid
higlighttable: make font-size smaller
Merge branch 'master' of github.com:getchopstick/chopstick-boilerplate into feature--html-snippets

* 'master' of github.com:getchopstick/chopstick-boilerplate:
  settings: update and extend default colors, fixes #30
  implement new box-sizing default: fixes #34

Conflicts:
	scss/_settings.scss
feature--html-snippets: add generic toggle script, add icon pattern, add toggle icon, add is-hidden helper class
update contributing.md with semantic versioning and git branch model, fixes #3 and fixes #43
Merge branch 'feature--html-snippets'

* feature--html-snippets:
  feature--html-snippets: add generic toggle script, add icon pattern, add toggle icon, add is-hidden helper class
  higlighttable: make font-size smaller
  add html snippets, add syntax highlighting styles, add line numbers, fix spacing on media patter, tweak the styleguide grid