Remove icon-120.png -> ~60@2x

in _images path
Add icon-512.png

in _images path
Add icon-512@2x.png

in _images path
Add icon-76.png

in _images path
Add icon-76@2x.png

in _images path
Add icon-72.png

in _images path
Add icon-72@2x.png

in _images path
Add icon-57@2x.png

in _images path
Add icon-16.png

in _images path