Add WS-Federation + SAML 2.0 to list of strategies.
Add HackID, me2day, and Odnoklassniki to list of strategies.
Add 23andMe, Buffer, and Geeklist to list of strategies.
Use `redirect` method on response if available
Merge pull request #70 from mde/master

Use redirect method on response if it's defined
Test cases for using framework-provided redirect.
Style edits.
Test cases for serializing to null or false.
Allow 0 as a valid serialization value.
Deserialize 0 value serialized to session.
Bump version to 0.1.13.
Test against node 0.8.
Add successMessage option.
Add test case for existing message with successMessage option.
Add failureMessage option.
Add test case for existing message with failureMessage option.
Bump version to 0.1.14.
Set Content-Length header to 0 when redirecting.
Bump version to 0.1.15.
Add Trade Me to list of strategies.