create chPick Pres

2019/2019-09-09_testCourseAdv/slides/chPickPresentation2.md

+## Cherry Picking Workshop
+
+* Check the commit reference of the two commits in develop
+* Chose the commit to keep
+* Add this commit to your branch
+```bash
+$ git checkout myBranchName
+$ git cherry-pick <commit reference>
+```
+