Simplify Vagrantfile - read group_vars/development

Previously there was some duplication between configuring the
`Vagrantfile` and also `group_vars/development`. Another downside was
the Ansible playbook supports multiple sites but the `Vagrantfile` did
nothing to easily allow that.

Now the `Vagrantfile` will read `group_vars/development` and
automatically set up all the hosts and synced folders. The only addition
needed for this is setting `local_path` on each site.
Merge pull request #101 from roots/vagrantfile-updates

Simplify Vagrantfile - read group_vars/development
Update to PHP 5.6

Also rename role to just "php"
Merge pull request #103 from roots/php5.6

Update to PHP 5.6
Fixes `|default` formatting
Merge pull request #108 from austinpray/fixDefaultFormat

Fixes `|default` formatting
• New PR based on previous #107
Merge pull request #109 from emaildano/wp-database-task

Expanded db_create option in database.yml
Added option to increase max_input_vars as this is something I change on every WP project using ACF. I often hit the max very as the number of custom fields grows.
Update development
Added require YAML

This may be due to a dependency version. It has resolve issues running `Virtual Box 4.3.20` and `Vagrant 1.7.1`
Merge pull request #112 from emaildano/patch-1

Added require YAML
Formatting
Merge pull request #110 from emaildano/max_input_vars

Add option to increase PHP max_input_vars
Improve README about non-dev servers
Fix #104 - Improve hostname/aliases logic

This was causing duplicate host entries to be added as the first site
host was re-used in both places. Now it's removed from the aliases.
Fix #115 - hostname to array
Updated default user shell when running secure-root.yml. Fixes #105
Merge pull request #118 from roots/feature/fix-user-shell

Updated default user shell when running secure-root.yml. Fixes #105