text: Title: IBM Watson STT not working
  Body: The IBM STT interface is not currently working as IBM have changed their authentication mechanism. 
  
  The existing implementation uses the [SpeechRecognition Python package](https://github.com/Uberi/speech_recognition) which has not been updated to use the new API key. 
  
  The simplest fix would be to implement a new StreamingSTT class within Mycroft and not use the SR package for this service.
  
  IBM STT Docs:
  https://cloud.ibm.com/apidocs/speech-to-text/speech-to-text
  