A variety of fixes and a change in the way errors are handled.

commands/random/nitro.js

@@ -14,7 +14,7 @@ module.exports = class NitroCommand extends Command {
     run(message) {
         if (message.channel.type !== 'dm')
             if (!message.channel.permissionsFor(this.client.user).hasPermission('EMBED_LINKS'))
-                return message.say(':x: Error! I don\'t have the Embed Links Permission!');
+                return message.say('This Command requires the `Embed Links` Permission.');
         const embed = new RichEmbed()
             .setAuthor('Discord Nitro')
             .setThumbnail('https://pbs.twimg.com/profile_images/814184180649197568/y2eZcVMq.jpg')