add Bonjour installers to dependencies folder
dependencies: add README
README: add CI build status badge
README: add note on dependencies folder
add kinect runtime
add reference to Kinect assembly
dependencies/README: add note on Kinect
server: stub in Kinect device enumeration

This is untested code because I don't actually have a Windows 8 machine to
test this on.
add note on minimum requirements
README: fix CI badge to point to correct project
server: require explicit starting

Stopping already happens automatically with a using() statement.
server: add IsRunning state inspector

This necessitated a few tidyups.
add simple unit test project