code: function(claims, callback){
  			if(typeof claims === "function" && !callback){
  				callback = claims;
  				claims = {};
  			}
  			var self = this,
  				sid = uuid.v4();
  			var token = jwt.sign(_.extend({ jti: sid }, claims || {}), options.secret, { algorithm: options.algorithm });
  			options.client.setex(options.keyspace + sid, options.maxAge, JSON.stringify(serializeSession(self)), function(error){
  				self.id = sid;
  				callback(error, token);
  			});
  		}
docs: create a new session and return the jwt