Added convenience script to build when packaging

util/build-all.php

+<?php
+
+$platforms = [
+	"chrome",
+	"firefox"
+];
+$root = preg_replace('/\/[^\/]+$/', '', dirname(__FILE__));
+
+foreach ($platforms as $platform) {
+	`{$root}/build.sh {$platform}`;
+}
+
+?>

util/package.php

 <?php
 
+if ($argv[1] == "-b")
+	include_once("build-all.php");
+
 $platforms = [
 	"chrome",
 	"firefox"