(Github Comment Enhancer) Syntax highlighting

[jerone]

Syntax highlighting.

Requires code blocks: #17

[jerone]

GitHub uses Linguist to perform language detection and syntax highlighting. To find out which keywords are valid, follow the following instructions:

1. Copy contents from https://raw.githubusercontent.com/github/linguist/master/lib/linguist/languages.yml
2. Convert YAML to JSON with http://yamltojson.com
3. Copy JSON to data property on http://jsfiddle.net/jerone/6sz6rctx/ and run it to get list of all languages.