Update for ESP32 Core 2.0.9 for Arduino, improved documentation

README.md

@@ -3,4 +3,32 @@
 These libraries allow you to compile arduino-esp32 applications for the ESP32-SOLO single core MCU.  Just replace the files in your esp32 directory with the included files.
 The libraries are only compiled for release versions of arduino-esp32.  Checkout the commit corresponding to your version in Arduino IDE boards manager.
 
+## Recommendation for Platform.IO users
+
 [Tasmota](https://github.com/tasmota/platform-espressif32/releases) has started providing releases supporting the SOLO, so I will recommend using those packages, along with Platform.io in the future.
+
+## Usage
+Locate your local installation of the ESP32 Core for arduino. On windows, this usualy should be here:
+
+```
+%LocalAppData%\Arduino15\packages\esp32\hardwre\esp32
+```
+
+__Recommendation:__ Create a backup of this folder, otherwise you must re-install the ESP32-Core for Arduino if you want to use other modules as the ESP32-SOLO.
+
+Open this folder and the correct subfolder inside with the correct version.
+
+Place the content of this repository into this folder.
+
+## How to build this on your own
+
+If you want to build the files in this repository on your own, perform the following steps:
+
+1. Basicaly follow the build-steps of the [ESP32 Arduino Library Builder](https://github.com/espressif/esp32-arduino-lib-builder).
+2. Before running the build-script, locate the file `sdkconfig` in the main folder, open it with a text-editor and add the following line:
+
+```
+CONFIG_FREERTOS_UNICORE=y
+```
+
+3. Now run the build-script (this will take some time). Your files will be created in the folder `/out`.