Update 2016-09-15-SoAkRueckblick.md
Update 2016-09-15-SoAkRueckblick.md

add image for soak 2016 rueckblick
pep-dortmund/towards-a-new-website,pep-dortmund/towards-a-new-website,pep-dortmund/towards-a-new-website,pep-dortmund/towards-a-new-website