Merge pull request #13 from i3mainz/copyedit_tkohr

Copyedit tkohr
Merge pull request #14 from i3mainz/copyedit_tkohr

some spreaded edits
Merge pull request #15 from i3mainz/copyedit_tkohr

edit 01Grundlagen + 03Visualisierung
Update README.md
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old
Merge pull request #17 from i3mainz/copyedit_engelt

Copyedit engelt
Merge pull request #18 from i3mainz/master

readme edits