Provide an icon for the nodes

[jmcanterafonseca]

a FIWARE icon.

@jason-fox could you help?

[jason-fox]

Take your pick: https://www.fiware.org/brand-guide/

[jason-fox]

Alternatively - take the PNG from here: https://github.com/FIWARE/tutorials.Step-by-Step/tree/master/docs/img

[jmcanterafonseca]

taken, probably we need to downsize it a bit, so leaving this open