Modules to be cached can be referred using - or /

So author/modulename and author-modulename will both work
Cache forge modules locally

caches the following modules in /usr/src/forge on the vm
Fundamentals:
  * camptocamp-augeasfacter
  * domcleal-augeasproviders
  * cprice404-inifile
  * razorsedge-vmwaretools
  * hunner-wordpress
  * puppetlabs-mysql
  * puppetlabs-apache
  * thias-vsftpd
  * puppetlabs-firewall
  * saz-sudo
Advanced:
  * puppetlabs-mysql
  Commented out for now:
    * zack-advanced
    * zack-haproxy
    * zack-irc
    * zack-irssi
Extending:
  * puppetlabs-apache
  * puppetlabs-mysql
Renamed the file to match the class

- Defines the modules to be cached
Uncommented modules for advanced

We are all set with the modules for all three courses now
@casharma
Typo fix
Add puppetlabs/puppetdb and use latest apache module
Merge pull request #73 from casharma/bugfix/vm/cacheforge

Bugfix/vm/cacheforge