Update README.md

unit_03/w08d04/morning_exercise/README.md

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 ## Github Collaboration
 
+Let's randomly assign the team member letter. The person who has the smaller number in their street address will be Team Member A (Ex: I live at 123 Maple Dr., and my partern lives at 5 Blueberry Ln. -- so my partner is Team Member A).
+
 #### Team Member A
+- You will be the Github master for this task.
 - Share your screen with your partner
 - Create a Github repo called `team-github-practice`
 - Add team member B as a "Contributor".