Remove /etc/hosts state from webserver state file
Remove unused hosts file
Use a default-hosts file to specify expected hosts to combine with custom-hosts
Update inline Vagrantfile docs with more clear instructions on hosts management

This is in prep for the vagrant-hosts plugin, which helps manage hosts inside the guest machine
Move path and host parsing out of hostsupdater specific block

This will be useful to us with the vagrant-hosts plugin as well.
Add support for the vagrant-hosts plugin to manage hosts inside the VM
Additional clarification, URL to plugin repo
Add a project ID to hosts file name

This Vagrantfile should check for wsuwp files. In the future, when this repo moves to more of a base server setup, multiple projects should be allowed to exist at once.
Updated plugin instructions in README
Merge pull request #20 from washingtonstateuniversity/20-hosts

Smarter hosts management inside the virtual machine