Merge pull request #1 from samtsai/master

Converted HTML.md inners to markdown and updated optional tags section
Updated CSS style guide
Cleaning up HTML guide formatting, etc.
Updating CSS rules and doc formatting.
Updating README to explain 'In flux' statuses.
Updating CSS rules.
Adding 'In Flux'
Dimming the note on working draft header.
More progress with CSS style guide
Updating CSS to latest agreed-upon terms.
Resolving conflicts w/ Sam's changeset.
Fixing case.
Some markdown cleanup and fixes.
updating indentation guide to two spaces
keeping the md file in tabs
two space tabs added to tabs example
two space tabbing in example code
Replace ’ quote with '
Fix "in flux" italics
Merge pull request #2 from samtsai/samtsai_style_guide

Replace ’ quote with '
Fix in flux escaping characters from showing