Design of Json parser related class, passed all junit tests. Needs improve.
Update baidu push sdk.
增加了List<T>和Map<K,V>的Json解析
增加了List<T>和Map<K,V>的Json解析
增加了对复杂的集合类型和图的解析方法，和对嵌套型集合类与图的解析方法
Implement json parser && add new model classes.
Merge pull request #6 from ZJU-ISST/feature/json

Implement json parser && add new model classes.