Use home dir for fingerprint data, enhancements and pbr for versioning

#178 Use home dir for fingerprint data
#174 General enhancement of docs, add cli documentation
#173 Use pbr for build & versioning

[BETA] Update endpoints, automated versioning and enhanced docs

This is a pre-release to test the new BMW API endpoints. These include an enhanced authentification process and have other regional differences to the existing solution. While the rest_of_world region has been confirmed to work, us and china still need to be tested.

#175 Rebase endpoints & auth to newest Android app

Additionally, some maintenance changes have been included that focus on automated versioning and enhancement of the documentation:
#174 General enhancement of docs, add cli documentation
#173 Use pbr for build & versioning

Update PointOfInterest parameter for Home Assistant

To enable a notify service to send messages and POIs from Home Assistant to the car, PointOfInterest parameters need to be in snake_case instead of camelCase.

#171 PointOfInterest parameters in snake_case

Fix sending messages from cli

#170 Fix sending messages from cli

Refactor send_message and send_poi for HomeAssistant

#167 Refactor send_message and send_poi for HomeAssistant

Send message to car and send POI from OSM

Send message to car and send POI from OSM #164

Test release for PyPi

Test automatic release on PyPi

Fix access for US and China

Fix access for US and China #155
Fix tests #152

Use customer.bmwgroup.com to get token

Use customer.bmwgroup.com to get token (#151)
Fix getattr KeyError (#148)

Remove time.sleep

Remove time.sleep while retrying on server 500 error. This is not allowed in HA thread pool since that risks exhausting the pool.