Merge tag '0.0.4' into develop

v0.0.4
comments now work with authentication system
add comment nesting
Merge branch 'feature/nested_comments' into develop
add dynamic comments with ajax
add factory girl instead of fixtures
add state_machine for post
modify app to work with state_machine
Merge branch 'feature/state_machine' into develop
add pagination
use wrong for predicate asserts
add breadcrumbs
bump version to 0.0.5
Merge branch 'release/0.0.5'
Merge tag '0.0.5' into develop

v0.0.5
fix sign out
change configs
fix app layout
add comment delete/edit with cocoon
add presenters layer