3DGA: Add references for the module (websites, books)

Author: sglavoie

modules/level-6/cm-3045-3d-graphics-animation/README.md

@@ -10,6 +10,9 @@
   - [Syllabus](#syllabus)
   - [Resources](#resources)
     - [:heart: Notes](#heart-notes)
+    - [References](#references)
+      - [Books](#books)
+      - [Main websites](#main-websites)
 
 ---
 
@@ -60,3 +63,26 @@ One two-hour unseen written examination and coursework (Type I)
 #### :heart: Notes
 
 - Visit [this page of world-class/notes](https://github.com/world-class/notes/tree/master/level-6/3d-graphics-and-animation).
+
+#### References
+
+##### Books
+
+- [Computer Graphics: From Pixels to Programmable Graphics Hardware](https://ebookcentral.proquest.com/lib/londonww/detail.action?docID=1438148) - Boreskov, A. and E. Shikin (Boca Raton: CRC Press, 2013)
+- [Computer Graphics](https://ebookcentral.proquest.com/lib/londonww/detail.action?docID=5640155) - Sinha, S. and A. Paul (Oxford: Alpha Science International LTD, 2018)
+
+##### Main websites
+
+- [Alan Zucconi - Tutorials](https://www.alanzucconi.com/tutorials/)
+  - [A gentle introduction to shaders in Unity3D](https://www.alanzucconi.com/2015/06/10/a-gentle-introduction-to-shaders-in-unity3d/)
+- [Essential Unity Concepts](https://learn.unity.com/tutorial/essential-unity-concepts)
+- [High-level shader language (HLSL)](https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl)
+- [Introduction to Particle Systems](https://learn.unity.com/tutorial/introduction-to-particle-systems#)
+- [Introduction to ShaderGraph](https://learn.unity.com/tutorial/introduction-to-shader-graph)
+- [Mixamo](https://www.mixamo.com/) - _"Animate 3D characters for games, film, and more."_
+- [Setting up Blendshapes in Unity - 2019.3](https://learn.unity.com/tutorial/setting-up-blendshapes-in-unity-2019-3)
+- [Shader Graph](https://unity.com/features/shader-graph)
+- [Shadertoy](https://www.shadertoy.com/)
+- [TurboSquid](https://www.turbosquid.com/) - _"3D Models for Professionals"_
+- [Unity documentation](https://docs.unity3d.com/Manual/index.html)
+- [Visual Effect Graph](https://unity.com/visual-effect-graph)