Add 'Recipe' docs for how to do common templates

[Romanx]

• For example parent -> child templates using partial templates.

[appelgran]

I think this would be really useful. As you said in #108 "...things like this that are standard mustache...". Where would one learn that standard mustache? The manual mustache(5) only covers mustache syntax and nothing about implementation even in general terms.

Please use my example from #108 . I don't know if I even got that absolutely correct. I'm not really in position to author more examples.

[srid]

Guys, how exactly are we supposed to do layouts in Stubble? Anybody have a working example? I might consider Stubble for srid/Feather#1