use a for loop in extend; use '||=' instead of '==' and '||'
no need to reference Array.prototype
in fact, NodeList has a `.length` and can be indexed, so no need to cast it to an array in the first place
even more idiomatic, use the ellipsis to unpack arguments
oops, reverting 1404f5f03498aa1a893b81b8d4495d7eedf5f1b7
use for/in/when, althogh I'm not quite happy with this yet
do not pollute `@show()` with that return variable
Merge branch 'master' of github.com:matthieua/WOW into more-coffee

Conflicts:
	dist/wow.min.js
 no need or the comparison, `null` will evaluate as `false` anyway
this makes the map even simpler
Merge pull request #26 from matthieua/more-coffee

More CoffeeScript!