Revamp all chapter content, and new styles

2.0

Updates to semantics

New organisation chapter and faq items

Merge pull request #54 from adamsilver/file-org

Organisation chapter added

Javascript chapter and a bunch of small updates

1.2

mixin note

New Modifiers Chapter

And a bunch of little things like what others say, typos and small tweaks to grammar and explanation.

First release

• Website setup
• Analytics
• Core pages
• First stab branding, logo and colours
• FB and Twitter sharing configured