update username in readme#6

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dchu808 wants to merge 4 commits intogalacticcenter:masterfrom

Commits on Jul 10, 2019

updating README with git info
dchu808
committed
Merge branch 'master' of https://github.com/galacticcenter/tutorial_repo
dchu808
committed
changed first line of README
dchu808
committed
fixed header
dchu808
committed