Fixed typing and added createChannel

lib/Client/Client.js

@@ -251,6 +251,8 @@ var Client = (function (_EventEmitter) {
 		});
 	};
 
+	// def leaveServer
+
 	Client.prototype.leaveServer = function leaveServer(server) {
 		var callback = arguments.length <= 1 || arguments[1] === undefined ? function (err) {} : arguments[1];
 
@@ -265,6 +267,26 @@ var Client = (function (_EventEmitter) {
 		});
 	};
 
+	// def createChannel
+
+	Client.prototype.createChannel = function createChannel(server, name) {
+		var type = arguments.length <= 2 || arguments[2] === undefined ? "text" : arguments[2];
+		var callback = arguments.length <= 3 || arguments[3] === undefined ? function (err, channel) {} : arguments[3];
+
+		var self = this;
+		return new Promise(function (resolve, reject) {
+			if (typeof type === "function") {
+				// options is the callback
+				callback = type;
+			}
+			self.internal.createChannel(server, name, type).then(function (channel) {
+				callback(channel);resolve(channel);
+			})["catch"](function (e) {
+				callback(e);reject(e);
+			});
+		});
+	};
+
 	return Client;
 })(EventEmitter);