cleanup PolylinePipeline
simple polyline WIP
simple polyline
cleanup simple polyline
Merge branch 'master' into polylineArc
PolylineGeometry
cleanup tests
jazz up sandcastle examples
fix heights
Merge branch 'master' into polylineArc
Merge branch 'master' into polylineArc
don't raise to surface for geometry updater
doc great arc
Add DataSource support for polyline raiseToSurface and granularity

Also add CZML support and update simple.czml to set raiseToSurface to false.
Merge branch 'master' into polylineArc
raiseToSurface -> followSurface
update ui in billboards, labels, camera and materials
update outdated pictures
add GeoJSON/TopoJSON example
initial attempt
Sort requires.
Merge remote-tracking branch 'origin/master' into polylineArc
cleanup