Merge pull request #73 from LibraryCarpentry/add-new-Maintainer

add single new Maintainer

Author: maneesha

data/curriculum.yaml

@@ -23,7 +23,7 @@ curricula:
   repo: https://github.com/librarycarpentry/lc-shell/
   ref: https://librarycarpentry.github.io/lc-shell/reference.html
   inst_notes: https://librarycarpentry.github.io/lc-shell/instructor/instructor-notes
-  maintainers: Jamie Jamison, Kaitlin Newson
+  maintainers: Jamie Jamison, Jesse Johnston, Kaitlin Newson
   status: Stable
   category: core