added comments and change background.jpg to background.png
 added comments and change  background1.png to background1.jpg
 added log statement
changed background2.jpg tobackground2.png and added comment with with @harsh notation
 add comments with @harsh notation
 addded comment and Changed Assets with assets in code
 Added Log Statements ,Added Comment with @harsh notation , Added a BachJSBrandenburg.mp3 file as temporary in audio/music/background/
Added a BachJSBrandenburg.mp3 file as temporary file in audio/music/background/