adding homework to markdown

README.md

 # Welcome to CMSC388B Winter 2021
+### Homework for 1/5/21
+    1.  Install git
+    2. Install node (version 12 or higher)  
+    3.  Install VS Code (not Visual Studio)
+    4.  Clone repo locally
+    5.  Add upstream location  
+    6.  Make a commit and push to your own origin