Cheat Sheet: examples for workflows

[dr0i]

While we can load example workflows in the playground (top left tab) this doesn't give a good overview (even more with more and more workflow examples to come).
A simple web page ("cheat sheet") could provide this overview (many workflows at one page). One could simply use the word search of the browser to quickly find things of interest.
While this is not really a ETL-hub (#58) it may get us there in a simple way (as a quick solution).

[fsteeg]

Commented in #95. I also think the term 'cheat sheet' is confusing here, cf. the Catmandu Fixes cheat sheet. It seems this here is intended to be more like a collection of examples (which we have both in the Playground and in multiple repos).

[dr0i]

Re name: just a name.
Re Playground examples:

A simple web page [...] could provide this overview (many workflows at one page). One could simply use the word search of the browser to quickly find things of interest.

Maybe it's only me - I find this handy.