More updates

* Variables should be wrapped in braces {} so that they are separate
from the rest of the stuff around them

* Make more things configurable at the beginning, this anyone can
redo the script to fit their own configuration

* Don't keep the username in .ssh. That's for SSH stuff. Put it in a
hidden directory for the person/team/organization that the script is
for instead.

* End cases with esac

Change-Id: I71c595c5311d75be098fdfd79e6b8a95fa5aa160