Add README.md for static master branch
Lighter background and no header border

- also set navigation link colour
Add rss subscription to main nav items
Add logo as background and adjust title size
Adjust navigation font size and margins
Use Droid Sans as header and main font
Add About and Join pages
Remove external links from site navigation
Add google group's RSS feed in sidebar
Style and other adjustments for sidebar
Set lists as indented
Post: Resources for Using Git
Post: Twitter To Teletype
Replace Droid Sans with Open Sans
Set header sizes, don't highlight or underline
Add hackspace favicon
Use separate font for main title (futura)