Adding rating, user_ratings_total

[minkukjo]

Hi, I am an intern at Samsung Electronics Framework Department.

I am currently working on a personal project using Google Maps API.

Then I found your project and I really got a lot of help. Thank you very much.

I found out that rating is not parsed in your great project, and I made some modifications to your project to get rating.

Your project was three years ago, but I was really helped. I really want to thank you even if you don't get this Pull request.

• Minkuk