added json to languages, implemented a corresponding 'LANGUAGES.….codeOnly'-Flag and included .groc.json as well as package.json in generated documentation
moved isLiterateCode-flag's comment into the right place
Merge branch 'feature-add-json-to-languages'

Conflicts:
	.groc.json
	lib/languages.coffee
moved doctags.coffee back to it's previous location to ease upstream-merges and updated the code accordingly
implemented multi-line block-comments for coffee-script
Merge branch 'feature-coffeescript-multiline-block-comments'

Conflicts:
	lib/languages.coffee
	lib/utils.coffee