add comments to humon node#replaceWithHumonNode; more updates to plans.coffee
Added window.Humon.register; with a sample call to register(date)
debugging new humon node implementation; looks somewhat stable
Fixed Date matchAgainstJson bugs -- made error message more clear.
Modify Humon.register to work in reverse order for priorities, so that custom defined types (which occur after native literal types) take precedence for matching.
Fixed a few bugs in the registrations(hn2j and j2hn) (node vs json references) for native literal types
add registration for null type