docs: Add note to CONTRIBUTING.md to use npm 5 to update package-lock (#1069)
docs: Add note to CONTRIBUTING.md to use npm 5 to update package-lock (#1069)


material-components/material-components-web,material-components/material-components-web,material-components/material-components-web,anton-kachurin/material-components-web,anton-kachurin/material-components-web