Add command for owner to set banner

README.md

@@ -72,7 +72,7 @@ Just read `LICENSE.md`. Give credit if you use any part of this monster, thanks.
 22. Start Xiao up!
 
 ## Commands
-Total: 511
+Total: 512
 
 ### Utility:
 

commands/util/banner.js

@@ -0,0 +1,29 @@
+const Command = require('../../framework/Command');
+const { DataResolver } = require('discord.js');
+
+module.exports = class BannerCommand extends Command {
+	constructor(client) {
+		super(client, {
+			name: 'banner',
+			group: 'util',
+			memberName: 'banner',
+			description: 'Sets the bot\'s banner.',
+			details: 'Only the bot owner(s) may use this command.',
+			ownerOnly: true,
+			guarded: true,
+			args: [
+				{
+					key: 'image',
+					type: 'image'
+				}
+			]
+		});
+	}
+
+	async run(msg, { image }) {
+		await this.client.rest.patch('/users/@me', {
+			body: { banner: await DataResolver.resolveImage(image) }
+		});
+		return msg.say('Set the banner.');
+	}
+};