Add readme

examples/Arduino_TinyGSM/README.MD

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+
+## Install the following dependency library files:
+[TinyGSM](https://github.com/vshymanskyy/TinyGSM)
+

examples/MicroPython_LoBo/README.MD

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+
+## Flash Micropython to ESP32
+
+The recommended version of Micropython for this board is `MicroPython_LoBo_esp32_psram_all.zip` from [LoBo prebuilt packages](https://github.com/loboris/MicroPython_ESP32_psRAM_LoBo/tree/master/MicroPython_BUILD/firmware).
+
+Flash using `esptool`:
+```sh
+esptool --chip esp32 --port PORT --baud BAUD --before default_reset --after no_reset write_flash -z --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 bootloader/bootloader.bin 0xf000 phy_init_data.bin 0x10000 MicroPython.bin 0x8000 partitions_mpy.bin
+```
+Or you can use any other GUI/tools and specify address for each file.
+
+## Upload the example
+
+Using `ampy`:
+
+```sh
+ampy put main.py
+```