Documenting processNode()

[sdmcallister]

I find myself using _hyperscript.processNode(#id) in a few instances and didn't see it in the normal docs.

One scenario is when I am duplicating something:

<div id="test123">
   <div _="on click log 'Test' then put my outerHTML after me 
       _hyperscript.processNode(#test123)">Copy Me</div>
</div>