Make tests sort of work

Run with ruby -Ilib:spec:vendor/rdmx spec/**/*.rb
Add Helios::Effect#set_light

So we can stub out the class name for testing purposes
Modify existing effects to use set_light

There are no tests for these...
Make rake work
Add Helios::Effect#set_lights
Make set_lights use threads
Add tests for CylonEffect and make them pass

No clue if this will actually work IRL :)
Fix README
Fix up effects and tests (closes #10)