mk-motion: update terms

"minor" release updates

According to our GTC §12 are available free of charge- For example, update of mk-motion version v5.x to version v5.y

"major release updates"

Major updates have to be purchased. For example update of mk-motion version 4.x to version 5.x.
Depending on what you have purchased already, rebates may apply - this will be checked for each order and dongle.

Please contact us for any update, so we can check soft- and hardware compatibility before the update.