Define onUploadProgress signature in docs

[MSevey]

Clearly define the method signature and what values get passed to onUploadProgress (outside of suggesting how to call it in the code samples).

[parajbs]

Hello MSevey,

Not quite sure what you mean by method signature.

I just tested the "onUploadProgress" function with "uploadFile" as specified in sdk-doc
"https://sdk.skynetlabs.com/?javascript--browser#setting-additional-options"
and it works great.

The output from the "onUploadProgress" function is displayed in the browser console.

If you want an output on the website as a progress bar, you simply have to send the values of "Progress ${Math.round(progress * 100)}%" to the PrograsBar from the example from the "onUploadProgress" function.

"onUploadProgress" only works in "skynet-js" at the moment.

I hope I could help, but I may have misunderstood you.