Use a flexbox based layout

[madx]

This issue addresses #7 and #13

The idea is to ditch the table-based layout and use a flexbox based one.

I've took some time to analyze the code this morning, and it involves a quite big rewrite of the getHtml() function (mainly the parsing strategy).

Actually, it might greatly simplify it!

[halffullheart]

Unit tests will be very helpful with this. I’m happy to start on those if you want to work on this.

[madx]

Yes, you can go ahead.

The first thing I'm doing is building a prototype of what to achieve, then I'll share it with you and wait for your comments :-)