Describe how to run tests in contributing docs.
Describe how to run tests in contributing docs.

jacwright/prosemirror,kiejo/prosemirror,adrianheine/prosemirror,salzhrani/prosemirror,adrianheine/prosemirror,adrianheine/prosemirror,salzhrani/prosemirror,tzuhsiulin/prosemirror,kiejo/prosemirror,kiejo/prosemirror,jacwright/prosemirror,mattberkowitz/prosemirror,tzuhsiulin/prosemirror,salzhrani/prosemirror,mattberkowitz/prosemirror,tzuhsiulin/prosemirror