starRating.css

.rating {
    color: #a9a9a9;
    margin: 0;
    padding: 0;
}

ul.rating {
    display: inline-block;
}

.rating li {
    list-style-type: none;
    display: inline-block;
    padding: 1px;
    text-align: center;
    font-weight: bold;
    cursor: pointer;
}

.rating .filled {
    color: #337ab7;
}

starTemplate.html

<ul class="rating">
    <li ng-repeat="star in stars" ng-class="star">
        ★
    </li>
</ul>