• https://cdn.bootcdn.net/ajax/libs/rxjs/5.0.0-beta.0/Rx.umd.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/5.0.0-beta.0/Rx.umd.min.js
• https://cdn.bootcdn.net/ajax/libs/rxjs/5.0.0-beta.0/Rx.umd.min.js.map