Docs for CocoaList and all the other stuff as well

[Kinark]

CocoaList, CollectionView and others have no documentation or code examples whatsoever. It's even harder to find anything related on Google.

How do I add Sections? How do I add dynamic Sections? What's the name of the Section element? Is there a section element? Can we add stuff manually or we have to use the data parameter?

This issue was already mentioned on #238 but it was closed without any mention of anything. I thought that if it was closed and marked as done, it should have been added, right? No, in the docs there's not even a mention of any of them. It's totally find out for yourself.