I've just thought of a way to improve the initial props page by adding
an example for a list/detail page structure. To do that, I've created a
separate `/detail` page, and a mock API which calls data from the array
we made on the previous PR.
A ListDetail component is created as an example for displaying detail.
Page structure is also cleaned up. Should I go ahead and add an example
on how to style with styled-jsx + its TS declarations? I might decide to
do it within this week anyway.
