add install and uninstall scripts

[Mearman]

trafficstars

[alerque]

Sorry @Mearman I'm sure your intentions are fine, but this isn't how an upstream project should tackle this problem.

[Mearman]

@alerque no worries. I did original set -e on the script, though there were several edge cases that were safe failures. I think the killall was one of them and it felt excessive to increase the scripts to handle that when all of the failures could be gracefully ignored.

Regardless, I mainly made this script to fit a user/use case similar to my own