Added shortcuts to user and server classes

User.addTo User.removeFrom Server.leave/delete Server.createInvite Server.createRole

src/Structures/Server.js

@@ -7,6 +7,7 @@ import User from "./User";
 import TextChannel from "./TextChannel";
 import VoiceChannel from "./VoiceChannel";
 import Role from "./Role";
+import {reg} from "../Util/ArgumentRegulariser";
 
 var strictKeys = [
 	"region", "ownerID", "name", "id", "icon", "afkTimeout", "afkChannelID"
@@ -132,5 +133,21 @@ export default class Server extends Equality {
 		}
 		return true;
 	}
+	
+	leave() {
+		return this.client.leaveServer.apply(this.client, reg(this, arguments));
+	}
+	
+	delete() {
+		return this.client.leaveServer.apply(this.client, reg(this, arguments));
+	}
+	
+	createInvite() {
+		return this.client.createInvite.apply(this.client, reg(this, arguments));
+	}
+	
+	createRole() {
+		return this.client.createRole.apply(this.client, reg(this, arguments));
+	}
 
 }

src/Structures/User.js

@@ -77,4 +77,12 @@ export default class User extends Equality{
 	sendTTS() {
 		return this.client.sendTTSMessage.apply(this.client, reg(this, arguments));
 	}
+	
+	addTo(role, callback) {
+		return this.client.addMemberToRole.apply(this.client, [this, role, callback]);
+	}
+	
+	removeFrom(role, callback) {
+		return this.client.removeMemberFromRole.apply(this.client, [this, role, callback]);
+	}
 }