<aside class="col-sm-3">
	<a href="http://www.amazon.com/gp/product/{{book.isbn}}"><img ng-src="http://images.amazon.com/images/P/{{book.isbn}}.01.ZTZZZZZZ.jpg" alt="Cover of {{book.title}}" class="full"></a>
	<p class="goodRating rating">{{book.rating}}/5</p>
</aside>
<aside class="col-sm-3">
	<a href="http://www.amazon.com/gp/product/{{book.isbn}}"><img ng-src="http://images.amazon.com/images/P/{{book.isbn}}.01.ZTZZZZZZ.jpg" alt="Cover of {{book.title}}" class="full"></a>
	<p ng-class="{goodRating : book.rating >= 3}" class="rating">{{book.rating}}/5</p>
</aside>
Change colour of rating to green if above 3/5 using ng-class
Change colour of rating to green if above 3/5 using ng-class
