Reindent and cleanup BooksSvc functions.
Disable http-server caching.
Include font-awesome.
Add reviews directives, controllers and templates.
Add reviews-average to books list.
Load jQuery before Angular.
Use an anchor tag for accessing reviews.
Add ReviewsSvc with sample data and use it for displaying average score.
Add display of stars using a directive.
Move star directive to its own file and separate its controller.
Replace star with stars (directive and controller) for cleaner code.