Added additional CSS classes without angle brackets to avoid SASS iss…

[josephsong]

I found the angle brackets were really messing with my SCSS files when I tried to write selectors. It was adding spaces around the angle brackets and leaving the escape slash in place. I modified the code to keep the angle brackets in the class and also add classes that don't have the special characters.

For example, from the readme, it would add both media-object-eqio->700 and media-object-eqio-gt-700 at the same time.