Added documentation about usage with NPM (Webpack, ES6 Modules, CommonJS)
Added documentation about usage with NPM (Webpack, ES6 Modules, CommonJS)

angular-ui/ui-mask,HawkHouseIntegration/ui-mask,lukepfeiffer10/ui-mask,lukepfeiffer10/ui-mask,isaacplmann/ui-mask,isaacplmann/ui-mask,RafaelTaranto/ui-mask,HawkHouseIntegration/ui-mask,RafaelTaranto/ui-mask