WAMP-CRA template for PHP

I created a WAMP-CRA template for PHP.  I basically just replaced client.py with a client.php.

I also added it to the template.py.  I wasn't sure what folder it should go into or what the template name should be, so let me know any of that needs to be changed.

``crossbar init --template authenticate:wampcra:php --appdir ~/hello``