Update README.md

Author: syphrpunk

README.md

@@ -1,4 +1,5 @@
-# eRPC Railway Template
+# Our implementation of the eRPC Railway Template
+![gh_banner_erpc_03](https://github.com/user-attachments/assets/6673073f-eba7-4bce-9180-8d24ea046269)
 
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