Updated Readme

README.md

@@ -1,8 +1,8 @@
 <!-- ## TTGO T-Beam Tracker for The Things Network and/or The Helium Network  -->
 ## TTGO T-Beam Tracker for use with a LoRaWan Network (Helium)
 
-Minor modifications added by [Max-Plastix](https://github.com/Max-Plastix/tbeam-helium-mapper/):
-The Payload Port and contents have been changed to match that in common use by CubeCell mappers: 
+Modifications added by [Max-Plastix](https://github.com/Max-Plastix/tbeam-helium-mapper/):
+  - The Payload Port and contents have been changed to match that in common use by CubeCell mappers: 
 Lat, Long, Altitude, Speed, Battery, Sats.  This common decoder function can now be used for both mappers:
 
 ```
@@ -38,7 +38,12 @@ function Decoder(bytes, port) {
 }
 ```
 
-The DevEUI is auto-generated by the device, and printed in the debug output to import into Helium's Console.
+  - The DevEUI is auto-generated by the device, and printed in the debug output to import into Helium's Console.
+  - The operation of the mapper is now more oriented for vehicle tracking.  Map points are distance-based
+  - The unit will power off after the battery goes below a minimum voltage without being attached to a USB charger
+  - Lat/Long is no longer shown on the OLED display.  The top line alternates between the last 3 digits of DevEUI & Voltage & Current, and Send count & Time.
+  - When stationary, the mapper will send updates at a slow rate, and then an ever slower rate after a longer duration
+  - See the descriptions in configuration.h to set the distance and timing parameters.
 
 
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