Update README and Vagrantfile

README.md

@@ -46,6 +46,10 @@ For local testing, it is recommended to use [Vagrant](https://www.vagrantup.com/
 After installing vagrant, run:
 
 ```bash
+# once, to install the plugin to automatically build the guest iso
+# at the time of writing version 0.25.0 is broken. 
+vagrant plugin install --plugin-version 0.24.0 vagrant-vbguest
+
 # start the vargant box
 vagrant up
 

Vagrantfile

@@ -20,9 +20,6 @@ Vagrant.configure("2") do |config|
     vb.cpus = 2
   end
 
-  # reboot the vm after vbguest installation
-  config.vbguest.auto_reboot=true
-
   # tell the user where things are. 
   config.vm.post_up_message = "Ready to distil and make WissKIs. Scripts can be found in /distillery/. "
 end