Added Github Section

Added first question.
Added to q2

Two answers
Update Exam1QandA.txt
Update Exam1QandA.txt
Added Req questions

q1
Added Q2 for Requirements

Question about function & non-functional requirements
Added Q2 for Working in Teams

Question about four stages of team dev.
Format change
Merge pull request #6 from JonJonWong/master

Version 3