add michael1.txt
add michael2.txt
add bob1.txt
add bob2.txt
merge bob in branch dev
merge michael in branch dev
Merge branch 'dev' of github.com:astrotycoon/learn-git-test into dev
add michael3.txt
merge michael in branch dev 1
merge branch dev in master
add bob3.txt
add bob4.txt
add michael4.txt
add michael5.txt
merge branch bon in dev 1
michael6.txt
merge branch dev in master 1