Provisioning continued

* More detail in README
* Set vm hostname and vm name equal
* Auto-install puppet modules for composer
* Fix apache provisioning
* Install CG client lib via composer

This is still an interim commit. The demo is still broken. Here's a quick and dirty todo list:

* rework the repo to install Yii via Composer
* configure the bootstrap to use the Composer autoloader. 
* Install MySQL and provision sql seed
* Auto-override Yii config to include CG config (a manual step?)