test(scope_spec) digests its isolated scope
test(scope_spec) digests from root on  when isolated
refactor(scope.js) modify new to reassign root to the actual root scope
test(scope_spec) executes evalAsync functions on isolated scopes
refactor(scope.js) allow child scope(s) to have access to asyncQueue and postDigestQueue on root
refactor(README.md) revise Read Me
test(scope_spec.js) child scope is no longer digested when destroy has been called
refactor(scope_spec.js) fix broken test
feat(scope.js) child scope is no longer digested when  has been called
test(scope_spec) watchCollection function works like a normal watch for non-collections