add support for USB PowerLinc

- bump to 0.4.1
- require serialport ~1.1.0
- update Readme.md
forgot to include @brandongoode's updates ...
Merge branch 'master' of https://github.com/TheThingSystem/home-controller into TheThingSystem-master
version bump - v0.4.2
Add support for `insteon.serial` - thanks @mrose17