[trees] - disable synced folder and updated README.md

vagrant/README.md

@@ -25,7 +25,7 @@ steps:
 
 To use this box you need the following software:
 
-- [Ansible](https://www.ansible.com/) (> 2.0)
+- [Ansible](https://www.ansible.com/) (>= 2.4)
 - [VirtualBox](https://www.virtualbox.org/) 
 - [Vagrant](https://www.vagrantup.com/)
 

vagrant/Vagrantfile

@@ -15,6 +15,7 @@ Vagrant.configure("2") do |config|
     end
 
     config.ssh.forward_agent = true
+    config.vm.synced_folder '.', '/vagrant', disabled: true
 
     #############################################################
     # Ansible provisioning (you need to have ansible installed)