Parse nyc output

[prashaantt]

Istanbul is being re-written as nyc, whose default output is currently not being parsed by node-tdd.

[stherrienaspnet]

Hello Prashaant, do you have plan to support new nyc output in the future?

[prashaantt]

Yes, I hope to get to this someday, although the text-summary option works pretty well already.

[kbrandwijk]

Would you accept a PR that includes:

• Setting the path to the nyc report
• Setting nyc report format (support all nyc formats)
• Watch report file to update coverage details

[prashaantt]

Sure, that would be very nice @kbrandwijk! I had plans to do something similar but haven't been able to get around it yet.

[kbrandwijk]

I will create a PR for this next week then. I almost have everything necessary for it running locally, but I don't have any time this week to wrap it up.