Update README with architecture and technology used

Author: EricHayter

README.md

@@ -23,5 +23,24 @@ mkdir build
 cd build
 cmake ..
 cmake --build .
-./src/renderer
+./src/renderer ../models/plant.obj
 ```
+
+## Architecture
+
+![Architecture Diagram](docs/diagrams/export/architecture.svg)
+
+The renderer is organized into distinct classes handling windowing, rendering, models, and materials. See the diagram above for the relationships between major components.
+
+## Dependencies
+
+This project uses the following third-party libraries:
+
+- **OpenGL 3.3 Core** - Modern graphics API for GPU-accelerated rendering
+- **GLFW** - Cross-platform windowing, input handling, and OpenGL context creation
+- **glad** - OpenGL function loader generated for OpenGL 3.3 Core Profile
+- **GLM** - Header-only mathematics library providing vector and matrix operations matching GLSL
+- **Assimp** - Asset import library for loading 3D models (.obj, .fbx, etc.) with material and texture support
+- **stb_image** - Single-header image loading library for texture data (PNG, JPG, etc.)
+- **ImGui** - Immediate mode GUI library for runtime debugging and parameter tweaking
+- **CMake** - Build system for managing compilation across platforms