feat(overmind-devtools): add electron prompt to also bump version

Author: christianalfoni

README.md

@@ -14,4 +14,6 @@ $ npm install --no-save nodegit  # needed for "repo-cooker --release"
 $ git pull
 $ git merge --ff-only next
 $ git push
-```
+```
+
+VSCode extension is released via `.travis.yml` due to limitations of the publishing tool that is unable to use root node_modules folder