Fixed a vulnerability with signed requests
clarified apache specific lookup for ssl & added ability to look for
Avoid trying to reuse spent authorization codes
Use  for signed request value check
fix broken tests and remove some broken ones
Updated version number
support for better security on shared domains
this repo does not need to point to itself
test signed request with wrong params
test json encode of non string params
test error code throws exception
test & fix lowercase method name triggers destroy session
test auth expire session destroys session
test graph video url switchinge
test logout url token
trigger metadata cookie usage
combine the two test cookie classes
test destroy clears cookie
test quoted metadata cookie
test empty metadata cookie