Merge pull request #24 from craigspaeth/master

header login inside AP
Update README.md

Fix typo.
Merge pull request #25 from tylerstalder/patch-1

Update README.md
update node modules and remove express 3 as a dependency
passing tests for error handling
Merge pull request #26 from zamiang/node-modules

@craigspaeth Update node modules and get build to pass
add logout functionality to passport
Merge pull request #28 from zamiang/new-logout

@craigspaeth Add logout functionality to artsy-passport