Add proper CSS font stack for pretty fallbacks

Many Linux distros don't package Verdana so this change overrides
the deafult font's outlined in ycombinator/news.css providing prettier
fallbacks
Makes collapse behave like Hacker News Collapse
Update README.md
Collapse button is now on the left of the username
Merge pull request #11 from stevenleeg/master

Collapsing changes
Fixed: Retina images no longer loaded after HN HTTPS update
Upped manifest number
Fixing retina graphics
Merge branch 'master' of git://github.com/tommoor/HackerNew
Favicon now has retina support

Fixes tommoor/HackerNew#12
Fixed: Follow highlighting broken by comment collapsing changes
Merge pull request #16 from stevenleeg/master

Fixes retina favicon
Fixed filters not loading on homepage
Merge branch 'master' of https://github.com/tommoor/HackerNew