cleaned up output cells and added one more example
cleaned up output cells and added one more example

SylvainCorlay/bqplot,SylvainCorlay/bqplot,ChakriCherukuri/bqplot,ChakriCherukuri/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,bloomberg/bqplot,bloomberg/bqplot,SylvainCorlay/bqplot