Prefix the "val:" in front of the name when "removing" a value from the session.
Update RedisSessionItemHash.cs to clear all values from local storage when executing "Session.Clear()". Also, when removing values from session, also remove it from the local storage.
Merge pull request #11 from lemkepf/master

Prefix the "val:" in front of the key name when removing a value from the session. Also, Clear out all values from local storage when doing a Session.Clear().