See the kibana contributing guide for instructions setting up your development environment. Once you have completed that, use the following npm tasks.

npm start

Start kibana and have it include this plugin
npm start -- --config kibana.yml

You can pass any argument that you would normally send to bin/kibana by putting them after -- when running npm start
npm run build

Build a distributable archive
npm run test:browser

Run the browser tests in a real web browser
npm run test:server

Run the server tests using mocha

For more information about any of these commands run npm run ${task} -- --help.