- Added README file to the cleanup scripts.

Documents/Shore/cleanup/README.rst

+Cleanup scripts
+***************
+
+Clean and update scripts for Vagrant boxes and instances and Docker images and
+containers.
+
+Usage
+-----
+
+The update scripts download new boxes/ images, the Vagrant clean scripts removes
+old version of base boxes (if newer ones are present) and the Docker clean
+script removes exited or created containers and dangling images.
+
+Requirements
+------------
+
+Obviously Docker and Vagrant respectfuly, also Python and the :code: `sh` and
+:code: `parse` Python packages for the Vagrant scripts.