First commit about refactoring and adding unit tests
ia_a is not a valid method and finish user class unit tests
Fix rubocop and add song spec tests
Remove rubocop for 1.9.2 in travis

- add travis badge
- change command in readme file
Merge pull request #39 from PierreRambaud/travis

Remove rubocop for 1.9.2
Merge branch 'master' of github.com:sosedoff/grooveshark into improve-tests
Finish tests for playlist
Test ApiError class
Add functionnals tests for client class
Hash formatting
Merge pull request #41 from PierreRambaud/improve-tests

Improve unit tests
Version bump: 0.2.12