Can Masonry use as RTL (Right-To-Left) direction

You can float the items right in css:

.masonry .item {
  float: right;
}

then change the option isOriginLeft: false in your javascript.

Here is a little codepen to illustrate:

http://codepen.io/anon/pen/gkCiG

I think isOriginLeft: false is the right answer, according to this site