SUMMARIZE: Have summarise as a synonym for summarize

[gjwgit]

How would we go about having the following two do the same thing:

ml summarise hugging news.txt

and

ml summarize hugging news.txt

[shashank-gv]

Added summarise as another command and simply called summarize.main() in summarise.py

[gjwgit]

Perhaps don't need to list summarise in the mlhub.yaml list of commands - is there any downside not listing it?

[shashank-gv]

Yep, summarise isn't required. I thought mlhub required it under commands to run the python file but that is not the case. Have removed it now.