title: phpunit command doesn't work for laravel 4 on windows 7
body: <p>I've recently installed laravel and have written some tests in /tests directory but when I use <code>phpunit</code> at cmd in the same folder that <code>phpunit.xml</code> exists, it says <code>'phpunit' is not recognized as an internal or external command,operable program or batch file.</code>. I'm using windows 7. what should I do?</p>