Adds install instructions, changelog link and testing instructions to…

… readme

README.md

@@ -6,6 +6,34 @@
 [![Coverage Status][ico-codecov]][link-codecov]
 [![npm downloads][ico-downloads]][link-downloads]
 
+## Install
+
+Using npm:
+
+```bash
+$ npm install coconut-open-api-js
+```
+
+Using yarn:
+
+```bash
+$ yarn add coconut-open-api-js
+```
+
+## Change log
+
+Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.
+
+## Testing
+
+```bash
+$ yarn run test
+```
+
+## License
+
+The MIT License (MIT). Please see [License File](LICENSE.md) for more information.
+
 [ico-version]: https://img.shields.io/npm/v/coconut-open-api-js.svg?style=flat-square
 [ico-license]: https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square
 [ico-travis]: https://img.shields.io/travis/coconutcalendar/coconut-open-api-js/master.svg?style=flat-square