Value prop and efficiency of downtime.js

Created by: khawkins98

As raised by @aurel-l in #24 (closed) there is plenty of room for improving and brodening the functionality of downtime.js

And has downtime.js ever been use recently? I think that every team already displays downtime information in its own way anyway and I don't remember any team or service using this prior to the “Great Shutdown of August 2016”. If this is set to remain in the codebase the possibility to use this should be more publicly communicated. @aurel-l