Detranspilerization tweaks for JavaScript examples
Detranspilerization tweaks for JavaScript examples

Tweaked JavaScript examples to look a little bit more like they'd be
written by hand:

1. Started out with function declarations in example 1, so example 2
   implicitly demonstrates moving from declarations to expressions.
2. Made `pop()` use a function scoped variable instead of the
   transpilation of the defensive use of `do`.
3. Switched examples 3 and 4 to return the function-holding object
   directly, as a progression from example 2's declare and return.
STRd6/homoiconic,webdev1001/homoiconic