Dimo-python-sdk

Minor updates/clatification in the readme file

- Includes new `available_signals` method for Telemetry
- Updates `get_token` to `get_dev_jwt`

What's Changed
* Initial Releases Config (oops)
* v1.2.0 provides an easier and more streamlined way to obtain a vehicle JWT via token exchange
* New method, `identity.check_vehicle_privileges()` returns a list of dev license client IDs and the permission level granted for each


**Full Changelog**: https://github.com/DIMO-Network/dimo-python-sdk/commits/1.2.0