How to publish on npm

• Update the version in projects/plotly/package.json
• Update the CHANGELOG.md
• ng test --codeCoverage=true --progress=true --watch=false
• cp README.md angular-plotly.png projects/plotly
• ng build plotly --prod
• git tag -a <version> -m <version>
• git push --tags
• cd dist/plotly
• npm publish