Javran Cheng and Hao Zhou's submission

Pull request for Javran Cheng (github: `Javran`) and Hao Zhou(github: `zhhoper`).

Added analyses about age ~ time distribution and age - arrest location.
Preview link can be found [here](http://htmlpreview.github.io/?https://github.com/Javran/CMSC702/blob/master/Baltimore/baltimore.html).