Main Features Documentation

[AntonioMateoGomez]

In order to publish the microsite, we need to add the basic documentation.
At the moment we have got the Quick Start guide, but we need docs for the 3 top-level sections that will be displayed in the features section, in the home page.
This is how this features section will looks like, as @pepegar proposed in the "Higherkindness" channel.

So, the first step to publish it would be adding those three top-level features "Data Structures", "Type Classes" and "Recursion Schemes".

[andyscott]

This sounds pretty good to me!

[pepegar]

Sounds good to me too. Thanks @AntonioMateoGomez !