updated readme to add Linux and OSX build instructions, and changing the format to markdown

https://trac.torproject.org/projects/tor/ticket/9139
Merge branch '3.0' of https://git.torproject.org/https-everywhere into 3.0
Fix for nsITreeView changes in Firefox 22

https://trac.torproject.org/projects/tor/ticket/8997
Changelog for 3.2.3
Fix changelog formatting
Update observatory cert whitelist
[Amazon Web Services] Add exclusion

Fixes https://trac.torproject.org/projects/tor/ticket/8907
[Hotmail / Live] Add exclusion

Fixes https://trac.torproject.org/projects/tor/ticket/9026

Conflicts:
	src/chrome/content/rules/Live.xml

Other exclusions from master that were missing also.