Merge pull request #17 from NatalieFrecka/voting

Voting
Minor fix to comments. Correct commenter_id is applied.
Merge branch 'master' of https://github.com/NatalieFrecka/WorkingTitle into comments
Merge pull request #18 from NatalieFrecka/comments

Comments
add user page content, add index content
Merge branch 'master' into pages_content
Merge pull request #19 from NatalieFrecka/pages_content

Pages content
add simplecov gem for test coverage measurement
Merge branch 'master' of https://github.com/NatalieFrecka/WorkingTitle into simplecov
Merge pull request #20 from NatalieFrecka/simplecov

Simplecov
add books by recent page, add books by popularity page
Merge branch 'master' of https://github.com/NatalieFrecka/WorkingTitle into simplecov
Merge pull request #21 from NatalieFrecka/simplecov

Simplecov
simple index and user page layout
Merge pull request #22 from NatalieFrecka/simplecov

simple index and user page layout
users can only vote once per uploaded book