refactored model tests
Merge branch 'master' of https://github.com/cherimarie/LibraryCollection into keywords
keyword validations
green on basic controller tests
show for keywords includes all associated books
added keywords to cute books in seed file
added link to browse by keyword on homepage
added authors to keyword show
added keywrods to book show, updated tests to expect for book requests
added keyword to books edit
keywords are searchable
changed Keyword attribute to name (instead of keyword)
changed to show all authors for books in keyword show
Merge master