Moved initialization of currentgame into startgame submit function, created songscallback function and moved quiz content selector into this function. Added variable to getsonginfo to use as callback and added complete to know when json data retrieval is successful. Added minor documentation to app.js.
Moved initialization of currentgame into startgame submit function, created songscallback function and moved quiz content selector into this function. Added variable to getsonginfo to use as callback and added complete to know when json data retrieval is successful. Added minor documentation to app.js.

jayzamazing/Music-Quiz-App,jayzamazing/Music-Quiz-App