add .toObject() method to structures (#522)

* add .toObject() method to structures

* add compiled PMChannel change from last commit

* uncomment members in VoiceChannel toObject method

lib/Structures/TextChannel.js

@@ -35,6 +35,15 @@ var TextChannel = (function (_ServerChannel) {
 
 	/* warning! may return null */
 
+	TextChannel.prototype.toObject = function toObject() {
+		var obj = _ServerChannel.prototype.toObject.call(this);
+
+		obj.topic = this.topic;
+		obj.lastMessageID = this.lastMessageID;
+
+		return obj;
+	};
+
 	TextChannel.prototype.setTopic = function setTopic() {
 		return this.client.setChannelTopic.apply(this.client, _UtilArgumentRegulariser.reg(this, arguments));
 	};