Alexa and bug fixes

In this update we have redesigned the way Nebula handles text input to allow for device checking. This allows Nebula to check if the command is really meant for her and react accordingly.

The previous methos did not invlove checking and as a result a change in brightness or color would cause all devices in the system to change.

Oh, yeah... and we've added alexa support! All of the functions are now possible, including (but not limited to) power, color, brightness and temerature!