Add a short description of the project to README
Add a short description of the project to README

Shortly describe what the project is about.

This is part of
https://github.com/openSUSE/agile-team-dashboard/issues/28

But this secction can still be improved including screenshots of the
application, completing the list of features that the application have,
etc.

freakuency/agile-team-dashboard,freakuency/agile-team-dashboard,freakuency/agile-team-dashboard,freakuency/agile-team-dashboard