Used the no device error
Used the no device error

Whenever the browser reports the DevicesNotFoundError, the user must plug a device in, in order to use TestRTC. Showed the messaged in this case.
jessetane/testrtc,shelsonjava/testrtc,jessetane/testrtc,jessetane/testrtc,ralic/testrtc,TribeMedia/testrtc,ralic/testrtc,TribeMedia/testrtc,webrtc/testrtc,webrtc/testrtc,ralic/testrtc,TribeMedia/testrtc,virajs/testrtc,jessetane/testrtc,virajs/testrtc,TribeMedia/testrtc,shelsonjava/testrtc,shelsonjava/testrtc,virajs/testrtc,shelsonjava/testrtc,virajs/testrtc,ralic/testrtc