adds

Added "instructions" for usage of this script; also added variable
definition (for prim description field) up top, to make it easier for
user to change that value.
made the adjustments to/for the *latest* submit (pull 213)

just started with the changes in 213 from Romka & plugged in (reworked
as needed) my variations for multi-attachment leashes
Merge pull request #214 from JoyStipe/main

multi-leash variant edits