Many Updates

1. change the coffee lint configuration
2. fixed Update $max bug
3. Improve JSON.stringify && JSON.parse to support function and regex
type
4. fixed LocalDB.collections() bug
5. fixed support return value indexedDB bug
6. rewrite localdb-spec.coffee test case
7. rewrite collection-spec.coffee test case(unfinished)
8. diable parse && stringily test case in utils-spec.coffee