Update Readme to not use plain-text passwords

Update the readme documentation to not store passwords as plain-text (or at least not require them to be stored as plain text).
pass options to framework's #initialize method
express redirect compatibility

avoid breaking changes for redirect when using express v3 vs v4
Merge pull request #220 from ircmaxell/password-example-pr

Update Readme to not use plain-text passwords
Merge pull request #232 from YChebotaev/master

pass options to framework's #initialize method
Merge pull request #267 from franck34/master

express redirect compatibility
Clarify note.
Disable node 0.4 on Travis CI.
Bump version to 0.2.1.