Add shell script to copy common files

This shell script will copy files commoon to
all platform into the package.

tools/copy-common-files.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+#
+# This script assumes a linux environment
+
+DES=$1
+
+bash ./tools/make-assets.sh        $DES
+
+cp -R src/css                      $DES/
+cp -R src/img                      $DES/
+cp -R src/js                       $DES/
+cp -R src/lib                      $DES/
+cp -R src/web_accessible_resources $DES/
+cp -R src/_locales                 $DES/
+
+cp src/*.html                      $DES/
+cp platform/chromium/*.js          $DES/js/
+cp platform/chromium/*.html        $DES/
+cp platform/chromium/*.json        $DES/
+cp LICENSE.txt                     $DES/