Adding Ink v2.2.1

[Ink](http://ink.sapo.pt/) is a set of tools for quick development of web interfaces.
It offers a fluid and responsive grid, common interface elements, interactive components, a design-first approach with ease of use and simplicity at its core.

This is a trimmed down version of the [2.2.1 tag](https://github.com/sapo/Ink/commit/aad66ecef3761fb68377968abbe841a49677a727). Without images, build files or documentation.

I'm part of the core development team.

Thanks!