Added DM support, DM Creation and DM Deletion

src/structures/GuildMember.js

@@ -1,5 +1,7 @@
 'use strict';
 
+const TextBasedChannel = require('./interface/TextBasedChannel');
+
 class GuildMember {
 	constructor(guild, data) {
 		this.client = guild.client;
@@ -56,6 +58,12 @@ class GuildMember {
 	get id() {
 		return this.user.id;
 	}
+
+	deleteDM() {
+		return this.client.rest.methods.DeleteChannel(this);
+	}
 }
 
+TextBasedChannel.applyToClass(GuildMember);
+
 module.exports = GuildMember;

src/structures/User.js

@@ -1,5 +1,7 @@
 'use strict';
 
+const TextBasedChannel = require('./interface/TextBasedChannel');
+
 class User {
 	constructor(client, data) {
 		this.client = client;
@@ -22,6 +24,10 @@ class User {
 		return `<@${this.id}>`;
 	}
 
+	deleteDM() {
+		return this.client.rest.methods.DeleteChannel(this);
+	}
+
 	equals(user) {
 		let base = (
 			this.username === user.username &&
@@ -45,4 +51,6 @@ class User {
 	}
 }
 
+TextBasedChannel.applyToClass(User);
+
 module.exports = User;

src/structures/interface/TextBasedChannel.js

@@ -11,10 +11,5 @@ function sendTTSMessage(content, options) {
 }
 
 exports.applyToClass = structure => {
-	if (structure.name !== 'TextChannel' && structure.name !== 'DMChannel') {
-		throw new Error(structure + ' cannot implement TextBasedChannel');
-	}
-
 	structure.prototype.sendMessage = sendMessage;
-
 };