add Face Detector

Update to supportlibrary 0.3

Update build dependencies

Change hasSenseOfHumor to be controlled by a flag

Minor fixes for demo

Don't repeat a joke for 2 minutes

Create a TtsSpeaker abstraction

Updating license

bump sdk to 0.2

Rename inference lib and change README

Update README, add schematics

Refactor imageclassifier

Updated TensorFlow Android Inference library to include multiple ABIs

Improve performance

First draft of Android Things TensorFlow image classifier sample