add c2 solo1 support in readme

Author: Jason2866

README.md

@@ -19,7 +19,7 @@ ESP32 is a series of low-cost, low-power system on a chip microcontrollers with
 1. Setup new VSCode pioarduino project.
 1. Configure a platform option in platformio.ini file:
 
-### Stable version
+### Stable Arduino
 currently espressif Arduino 3.1.0 and IDF 5.3.2.241210
 
 ```ini
@@ -29,7 +29,7 @@ board = ...
 ...
 ```
 
-### Development version
+### Development Arduino
 espressif Arduino repo branch master and latest compiled Arduino libs
 
 ```ini
@@ -39,4 +39,21 @@ board = ...
 ...
 ```
 
+### ESP32-solo1 and ESP32-C2 Arduino support (with pioarduino only feature *Hybrid compile*)
+Example configuration:
+
+```ini
+[env:esp32solo1]
+platform = https://github.com/pioarduino/platform-espressif32.git#develop
+framework = arduino
+board = esp32-solo1
+monitor_speed = 115200
+
+[env:esp32-c2-devkitm-1]
+platform = https://github.com/pioarduino/platform-espressif32.git#develop
+framework = arduino
+board = esp32-c2-devkitm-1
+monitor_speed = 115200
+```
+
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