Not conver keyframes

[vladymy]

Hi!

Firstly I would like to say that you did a great thing man! I like you css2sass so much!!!!! And use it from time to time.
But recently I founded out that css2sass not convert keyframes for example try convert this code

@keyframes throb {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(0.8);
    }
    100% {
        transform: scale(1);
    }
}

[jpablobr]

This is related to #4 :/