Feature/mindmeld microphone component

Widgets for the query/microphone and the cards.  Also, an example voiceApp that uses both of them for an easy 'voiceNavigator-lite' app.
What is the config going to look like in the finally released version? The other applications in example/ certainly don't follow any standard rules about what is OK here, but we should decide on something that makes sense for this application. Maybe we can point it to one of the demo app IDs in prod?