[docs] Help: Linking up the development build

[rgbkrk]

I've followed the contributing docs to get the local dev build going. However, I can't seem to activate the local extension. Can the contributing guidelines give a bit more on how to get this package going? I'd love to fix several mimetypes.

[rgbkrk]

It looks like the next step is to open src/extension/index.ts and hit F5 (...I wish I knew what the command palette was for this, as not all keyboards have F5).

[DonJayamanne]

Local Debugging

1. From the debug panel select Run Extension Note: This will automatically start the incremental build task. Optionally, use the command Debug: Select and Start Debugging -> Run Extension
2. Once VS Code launches, open a notebook file (.ipynb) with output for one of the mime types supported by this extension (such as application/vnd.vega.v2+json)

[DonJayamanne]

Closing as fixed.