restore correct version

assignments/src/MV3500Cohort2021JulySeptember/homework1/README.md

-## Student assignments: homework submission directories
+## Homework 1: Unicast Networking
 
-* [Homework 1 README](homework1/README.md)
-* [Homework 2 README](homework2/README.md)
-* [Homework 3 README](homework3/README.md)
-* [Homework 4 README](homework4/README.md)
+Deliverables:
+
+* Update unicast sockets sender/receiver, modifying provided code, test via telnet.
+* Demonstrate ability to build, run and document Java programs that perform networking tasks.
 
 Please see the [README.md](../../../README.md) in the parent
 [assignments](../../../../assignments) directory for detailed instructions.