Merge pull request #3 from hoanguyen311/master

Update form other contributers
edit question data
change catID to categoryIDs
Merge pull request #10 from tuyencao/master

edit questions JSON
add description field
Merge pull request #11 from tuyencao/master

add description field
Merge pull request #12 from thaodta/master

Merge pull request #4 from hoanguyen311/master
Added      app/views/question-details.html
Modified   app/scripts/app.js
Modified   app/scripts/controllers/question-list-controller.js
Modified   app/views/questions-list.html
Modified   app/index.html
Modified   app/scripts/controllers/question-list-controller.js
Modified   app/scripts/services.js
Modified   app/views/questions-list.html
Merge pull request #4 from hoanguyen311/master

Update data