add todo items

docs/software/TODO.md

@@ -2,6 +2,8 @@
 
 You probably don't care about this section - skip to the next one.
 
+* Nimble getting started https://espressif-esp-idf.readthedocs-hosted.com/zh_CN/release-v3.3/api-reference/bluetooth/nimble/index.html#overview?  could it work with arduino esp-idf 4.2
+
 # Medium priority
 
 Items to complete before 1.0.

docs/software/nrf52-TODO.md

@@ -1,5 +1,7 @@
 # NRF52 TODO
 
+* Possibly switch from softdevice to Apachy Newt: https://github.com/espressif/esp-nimble
+https://github.com/apache/mynewt-core - use nimble BLE on both ESP32 and NRF52
 
 ## RAK815