Is there instructions for a silent install package for the client software?

Firstly, you need to create an MSI-package using the Client Builder by running 'ClientInstallation.exe' file from the archive provided.

Once you have an MSI you can either use GPO to assign the package as described here:
http://www.advancedinstaller.com/user-guide/tutorial-gpo.html

SCCM only executes the command you tell it to (admin rights):
msiexec /i "path_to__the_package" /quiet /norestart