Fix example config countryCode spelling to be recognized by code

Streamlined troubleshooting for "RTSP Stream is not loading"

Update README.md

0.2.2

Updated README with recent homeassistant discovery changes

Added additional image entities

Added new timestamp topic

Corrected regex to only replace out of spec characters

Updated homeassistant discovery topic names to be in line with specification

0.2.1

Updated readme to use more reliable TZ environment variable

Added timezone environment variable for vs code dev container.

0.2.0

Added version tag

Allow nulls for pattern property