added high level diagram

Readme.md

@@ -26,6 +26,10 @@ This documentation is intended for Thomas Bocek, the blockchain module professor
 - **Database**: Postgresql (database), because that's what everyone was familiar with.
 - **Containerization**: Docker (standardizes development and deployment processes).
 
+### High Level Infrastructure Diagram
+<img src="ROC_highlevel.png">
+
+### Low Level Infrastructure Diagram
 <img src="ROC_infrastructure.png">
 
 ---