Add a fast build script to package.json
Add a fast build script to package.json

This doesn't run a linter or any documentation generation, aiding in
quick development time.

Change-type: patch
Signed-off-by: Cameron Diver <1d572acbfa68c7c6e541c7b840d6b622e5c0dc91@resin.io>

resin-io/resin-cli,resin-io/resin-cli,resin-io/resin-cli,resin-io/resin-cli