Merge remote-tracking branch 'upstream/master'

Conflicts:
	WPRavenAuth.php
Merge remote-tracking branch 'upstream/master'
Fixed a problem with key and cfg being instance variables but being accessed as class level variables in install(). Made install() an instance method (called on construct) to avoid continual call looping.
Fix everything (I hope)
Merge branch 'master' of https://github.com/Burgch/WPRavenAuth

Conflicts:
	WPRavenAuth.php
	app/core/raven.php
Options stuff