link key directories

README.md

 ## MV3500 Distributed Simulation Fundamentals Course
 
-This course project contains original assets, presentations, references and source code.
+This course project contains original assets, [assignments](assignments), [examples](assignments), [presentations](presentations), and [specifications](specifications) download directions.
 
 Key course sites:
 * [MV3500 Course Syllabus](https://gitlab.nps.edu/Savage/NetworkedGraphicsMV3500/blob/master/MV3500NetworkedGraphicsSyllabus2020JulySeptember.pdf)
@@ -9,7 +9,7 @@ Key course sites:
 <!-- * [Wikipedia book: Networked_Modeling_and_Simulation](https://en.wikipedia.org/wiki/Book:Networked_Modeling_and_Simulation) -->
 * [Savage Developers Guide: telnet Network Protocol](https://savage.nps.edu/Savage/developers.html#telnet)
 
-References and Resources:
+References and resources:
 * [GitLab Flavored Markdown (GFM)](https://docs.gitlab.com/ee/user/markdown.html)
 * [Java Archive (.jar)](https://docs.oracle.com/javase/tutorial/deployment/jar/basicsindex.html) for sharable/runnable software libraries
 * [Java SE JDK download](https://jdk.java.net/18) (OpenJDK 18)