obs instructions

[Bruce Steers <bsteers4@xxxxxxxxx>]

various vm's i installed on I had to first install curl for the second
instruction.

Perhaps a note for the novices to be sure to install curl before running
the commands.

I missed the error the first time.
i just copied and pasted the instructions but it failed.
then i worked out it was due to not having curl installed.

Respects
BruceS