update requirements

I added requirements to use this vagrantbox.

• rsync - you need this to be able to sync the local folder with folder inside ansible
• Ansible - you need this provisioner for vagrant to be able to run installation and configuration tasks on vagrantbox

added PHP7

• In this release, I replaced php5.6 with php7.0 play.
• In addition, I added xdebug to PHP and replaced the unknown box with official hashicorp centos 7 box.
• There are also some other minor fixes and tweaks

First fully working example

Creating roles properly

• init
• httpd (apache 2.4.6)
• php (5.6.*)
• mysql (5.5.41)
• phpmyadmin (cloned latest from git repo)

Also removed shell scripts & some cleanup

This is now fully working example!