Update the README

* Install Flask
* Configure the virual host
write a test for the virtual host configuration
a unit test for the virtual host file
Write out a virtual host file
Update the tests of the virtual host config

The file should contain 'VirtualHost'
fix serverspec for content matching virtualhost
update the serverspec test to look for sites-enabled
Move the template resource and add link

the virtual host should be configured in sites-available
and linked to from sites-enabled
add content to the virtual host template