Add multiple notebooks

[bharathts07]

WHAT

1. Renamed the over long "getting started with..." to "ml-function-classify" - easier to read
2. Add a new notebook that demonstrates how you can use ML Function Anomaly Detect
3. Add a notebook template which show how you can deploy a Python UDF that takes image urls and performs operation on the image present at the URL

WHY

Need to demo the possibilities to Sales / Solution engineers
Built on top of branch of #149

[bharathts07]

@syutika added this force command based on you suggestion

[bharathts07]

For better indentation in output

[bharathts07]

import needed for indenting json output in notebook