Updated optimization for web build

Web build used to fail to run on iOS browser. In recent  update, that had been fixed, so web build can run on iOS normally now.

Size of web build had also been optimized  and compressed so it take less time to load, but  the image quality  will be a little lower than in download build.

Please download  the game for best playing experience,  as web build is just available  in cases player doesn't  have suitable  hardware to play the game.