Render Graph in README Test

README.md

@@ -30,3 +30,13 @@ Below is short explanation of remaining files in the project folder.
 ```
 Additionally, the sample project contains Makefile and component.mk files, used for the legacy Make based build system. 
 They are not used or needed when building with CMake and idf.py.
+
+# Example Render Test
+
+```mermaid
+graph LR
+    A[Start] --> B{Ist es gut?}
+    B -->|Ja| C[Gut]
+    B -->|Nein| D[Schlecht]
+    C --> E[Ende]
+    D -->