fixed cap error and requires list

lib/channel.js

@@ -1,3 +1,5 @@
+var List = require("./list.js").List;
+
 exports.Channel = function(name, server, type, id, isPrivate){
 
     if(!type){ //there's no second argument

lib/list.js

@@ -21,7 +21,7 @@ exports.List.prototype.add = function( child ) {
 
 	function addChild(child){
 
-		if(self.length() > cap){
+		if(self.length() > self.cap){
 			self.splice(0, 1);
 		}