add - two tests for inheritence
it('inherits the parent\'s propesties whenever they are defined
it('can manipulate a parent scope\'s property'
it('can watch a property in the parent'
test - nesting at any depth
pass - all initial inheritance tests
refactor - shorthand for creating a new obj
refactor - test organization
test - shadowing
seperated watch does not digest its parent(s)
it keeps a record of its children
add - $$everyScope
the scope digests its children