android auto instruction

AndroidAuto.md

@@ -0,0 +1,13 @@
+Podcini runs fine on "desktop head unit", the screenshots are on Readme.
+
+So this appears the issue with Podcini not showing up on car display, from Google document:
+
+> To test your app in real vehicles, it must be installed from a trusted source such as the Play Store, with one exception detailed in [Allow unknown sources](https://developer.android.com/training/cars/testing#unknown-sources).
+
+I know "such as" indicates there are other trusted sources, but I don't know which are deemed as such.  Podcini is currently not listed yet on Google Play.  To work around it, again from Google document:
+
+> On Android Auto, there is also a [developer option](https://developer.android.com/training/cars/testing#developer-mode) to enable running apps not installed from a trusted source. This setting only applies to [media](https://developer.android.com/training/cars/media) and [messaging](https://developer.android.com/training/cars/messaging) apps
+
+Details here: https://developer.android.com/training/cars/testing#developer-mode
+
+This has been tested as working.

README.md

@@ -16,6 +16,7 @@ An open source podcast instrument, attuned to Puccini ![Puccini](./images/Puccin
 
 #### Podcini.R version 6.5 as a major step forward brings YouTube channels in the app.  They can be searched, subscribed and played from within Podcini. For more see the changelogs
 #### If you are migrating from Podcini version 5, please read the migrationTo5.md file for migration instructions.
+#### For Podcini to show up on car's HUD with Android Auto, please read AnroidAuto.md for instructions.
 
 This project is based on a fork of [AntennaPod](<https://github.com/AntennaPod/AntennaPod>) as of Feb 5 2024.