chore(README): add reference to compute-scroll-into-view (#331)

Author: stipsan

README.md

@@ -418,6 +418,7 @@ This API signature were warned to be dropped in `v2.0.0`, and it was.
 
 # Related packages
 
+- [compute-scroll-into-view](http://npmjs.com/package/compute-scroll-into-view) - the engine used by this library.
 - [smooth-scroll-into-view-if-needed](http://npmjs.com/package/smooth-scroll-into-view-if-needed) – ponyfills smooth scrolling.
 - [react-scroll-into-view-if-needed](https://www.npmjs.com/package/react-scroll-into-view-if-needed) – A thin wrapper to scroll your component into view.
 - [Don't be shy, add yours!](https://github.com/stipsan/scroll-into-view-if-needed/edit/master/README.md)