<commit_before>Prerequsite:
https://github.com/panacloud/learn-typescript

For Installation instructions:
https://github.com/ReactiveX/RxJS

This step covers the Preface code of the following book using RxJS 5 and TypeScript:
https://github.com/panacloud/learn-typescript

To run:
npm start
<commit_msg>updated step 0 readme<commit_after>Prerequsite:
https://github.com/panacloud/learn-typescript

For Installation instructions:
https://github.com/ReactiveX/RxJS

This step covers the Preface code of the following book using RxJS 5 and TypeScript:
http://www.amazon.com/Reactive-Programming-RxJS-Asynchronous-JavaScript-ebook/dp/B01ATYZTI4/

To run:
npm start

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