appends `microphone` method to `window.navigator`
First working implementation

- starts implementation over from scratch using example plugin from Cordova's 4.0 official documentation
- changes response from string to boolean
Merge branch 'feature/working' into develop
release

- version bump
- simple instructions added to README
Merge branch 'release/1.1.0'
Merge tag '1.1.0' into develop

Initial working release