Add loadData() to KNNClassifier that enables user to load dataset from raw data instead of file

[champierre]

Nature of issue?

• Existing feature enhancement

Existing Feature Enhancement details:

I created a machine learning app using ml5.js KNNClassifier and wanted a feature that enables the user to upload the dataset from <INPUT type="file"> tag like the following capture image.

With load(), file path needs to be provided, but you cannot get file path when you upload from file tag. So, I added to my customized ml5.js, loadData() that enables user to load dataset from raw data. By combining this method and <INPUT type="file"> tag, I could give a way for user to upload dataset file.

I think this is common user case, so I opened PR #279 so that other users can use this feature.

[joeyklee]

This seems resolved with #279. I will close for now. Thanks so much @champierre !