Added unmute command

commands/unmute.js

+const Discord = require('discord.js');
+const ms = require("ms");
+
+exports.run = async(bot, message, args, connection) => {
+
+    if (message.member.hasPermission("MANAGE_MESSAGES")){
+    let spammer = message.guild.member(message.mentions.users.first() || message.guild.members.get(args[0]));
+    let role = message.guild.roles.find(r => r.name === "Muted");
+    if(!role) return;
+    if (!spammer.roles.has(role.id)) return message.channel.send('User is already unmuted.');
+    spammer.removeRole(role.id);
+    message.channel.send(`<@${spammer.id}> can speak again.`);
+    }
+    else {
+        message.channel.send(`You don't have permission to unmute users.`)
+    }
+};
+
+module.exports.help = {
+    name: 'unmute',
+    aliases: ['um']
+};