Configure kiss device

This patch makes configuration of the kiss device easy, and adds a reasonable set of default values for that. It also fixes up the pip command in the Makefile.

I went ahead and added "and Contributors" to all the license and copyright statements, and added a contributors file. That should be enough to satisfy the licensing requirements, and it means that when you get more contributors, there won't be extra pointless diffs with them adding their names to each file they touch. If you'd prefer to do this differently, I'm happy to oblige.

Thanks for releasing this under a reasonable license (insert generic rant about horrible ham licensing culture).