Add showcase section #1
Description
At some point, there should be a website section which lists websites where CovJSON is used in some way.
The first candidate could be http://ec-melodies.github.io/demo-portal/ although it is not immediately obvious how to load/use covjson there.
The second one could be http://viewer.coaps.fsu.edu/GlobalHycom/mapviewer which soon is upgraded to ncWMS2 and which then makes use of the CovJSON WMS output format.