Generate a simple balloon for GeoJson data to play with.
Merge branch 'hpinkos-balloon' into mramato-geojson-balloon
Merge branch 'hpinkos-balloon' into mramato-geojson-balloon
Updates to `viewerDynamicObjectMixin`

To have it work properly with DynamicObjects.

I also changed the max width/height of the balloon to be much bigger.
Fix typo.
Merge pull request #1 from mramato/mramato-geojson-balloon

GeoJSON balloon support