Update the root version

Update the root version to make the notebook run on binder (environment.yml).
A corresponding update to reana.yaml
Update README

Update the notebook to make the plot appear

Remove %jsroot on from the draw cell in the notebook to make the plot appear.
Update readme with tag v1.4

Update for the CERN Open Data portal

Use tags in the readme

Update for the CERN Open Data portal

• Add the reana workflow from Tibor

Update for the CERN Open Data portal

• Small typo fixes
• Use only a single thread by default to run reliably in dockerized environments

Integration in CERN Open Data portal

v1.0

change to correct remote for binder