Merge pull request #7 from Sonopa/add_reference

Added fields for article
Merge pull request #8 from eemihauk/add_reference

Refactored Article-models attributes and cucumber tests
Changed tests to report results to coveralls
README.md: added coveralls badge
.travis.yml: make travis to run cucumber tests
Added some tests for articles_controller
Added a test for article's to_s method
Merge pull request #9 from nygrenh/tests

Tests
Publisher and address fields back
Merge pull request #10 from Sonopa/add_reference

Publisher and address fields back
Modified show and form
Merge pull request #11 from Sonopa/add_reference

Modified show and form
fixed article validations to allow blank volume and number
Merge pull request #13 from Mession/fix_article_validations

Fixed article validations to allow blank volume and number
created models, migrations and seeds for new super_reference
refactored old references_controller and its index view to test if listing super_references works

.travis.yml: make travis to run cucumber tests

Added some tests for articles_controller

Added a test for article's to_s method

Publisher and address fields back

Modified show and form
major changes to references, see comments
Yritetty saada joitakin testejä toimimaan
Update application_helper.rb
Update application_helper.rb