First pass on updating the git branch lesson#550

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kaidamasaki wants to merge 6 commits intomainfrom

kaida/update-git-branches

Commits on Apr 15, 2019

First pass on updating the git branch lesson
kaidamasaki
committed
Update managing-git-branches.md
Dan Roberts
authored

Commits on Apr 16, 2019

Commits on Apr 18, 2019