Improve Readme (#3)

* docs(): add npm badges and installation info
* docs(): improve readme
* chore(): help github to pickup license information
* Revert "chore(): help github to pickup license information"

Author: Michael Oberwasserlechner

Diff for: README.md

@@ -1,15 +1,37 @@
-Blob.js
-==============
+# Blob Polyfill
 
-Blob.js implements the W3C [`Blob`][1] interface in browsers that do
-not natively support it.
+[![npm](https://img.shields.io/npm/v/blob-polyfill.svg)](https://www.npmjs.com/package/blob-polyfill)
+[![npm](https://img.shields.io/npm/dm/blob-polyfill.svg)](https://www.npmjs.com/package/blob-polyfill)
 
-Supported browsers
-------------------
+## Purpose
+
+Blob Polyfill serves [Blob.js][0] over npm.
+ 
+Blob.js implements the W3C [`Blob`][1] interface in browsers that do not natively support it. 
+
+## Changelog
+
+[Please read the changelog](CHANGELOG.md)
+
+## Installation
+
+To install this library, run:
+
+```bash
+$ npm install blob-polyfill --save
+```
+
+
+## Supported browsers
 
 Blob.js shares the [same supported browsers as FileSaver.js][2].
 
+## License
+
+[MIT](LICENSE.md)
+
 ![Tracking image](https://in.getclicky.com/212712ns.gif)
 
+  [0]: https://github.com/eligrey/Blob.js
   [1]: https://developer.mozilla.org/en-US/docs/Web/API/Blob
-  [2]: https://github.com/eligrey/FileSaver.js#supported-browsers
+  [2]: https://github.com/eligrey/FileSaver.js#supported-browsers