Breakpoints are not getting handled properly

[ayan-bloomscorp]

The tool has handled the extra large(xl) breakpoint and also successfully removed the directive. But

1. Though it has added support for small screens(xs, sm) but didn't remove the directive
2. Didn't handle large screen(lg, md)

[ayan-bloomscorp]

Raised a PR (#7) to fix this issue.

[synopss]

Raised a PR (#7) to fix this issue.

I commented on it, but your fix is breaking some test cases.