Add gitreset command for resetting to master

Useful for my testing bot
Usually I'd have to go log onto my server to reset, but now I can just
use this command like a lazy person instead :)

commands/admin/gitreset.js

@@ -0,0 +1,24 @@
+const fs = require('fs');
+const reloadCommands = require("../../util/reloadCommands");
+const convertDateToISOString = require("../../util/convertDateToISOString");
+
+module.exports = {
+	name: 'gitreset',
+	description: 'Reset head to master, and reload commands',
+	admin: true,
+	execute({message, client}) {
+		let cmd = "git reset --hard master";
+		const exec = require("child_process").exec; 
+		let sendText = "";
+		exec(cmd, (err, stdout, stderr) => {
+			reloadCommands(client);
+			sendText = `${stdout}\nCommands reloaded`;
+			if(err){
+				fs.writeFileSync("../../data/log.txt", `${convertDateToISOString(new Date())}\n${stderr}\n`, {flag: 'a'});
+				sendText = `Something went wrong, check data/log.txt for more information`;
+			}
+
+		});
+		message.channel.send(sendText);
+	}
+};