Added correct display_index
Added correct display_index

SylvainCorlay/bqplot,rmenegaux/bqplot,bloomberg/bqplot,dmadeka/bqplot,SylvainCorlay/bqplot,bloomberg/bqplot,ssunkara1/bqplot,SylvainCorlay/bqplot,rmenegaux/bqplot,ssunkara1/bqplot,ChakriCherukuri/bqplot,ChakriCherukuri/bqplot,dmadeka/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot