Fix problem with datatype of returned value
Merge pull request #7 from angelino/fix_euclidean_distance

Fix problem with datatype of returned value
Add book views
Merge pull request #8 from angelino/users_view

Add show book view
Add Rank
Add Recommendations
Fix rank and recommendation routes
Merge pull request #9 from angelino/rank_and_recommendation

Rank and Recommendations
wip: Improve Layouts