update rails to 4.0.2
switch figaro to dotenv
remove stub test
add in acts_as_paranoid
representer specs
improved tests for representers
add in audio files and versions
improve paged collection tests, reuse test model
fix misnamed variable in test
fix representer tests to serialize and parse json
fixed prx3 to have not null promos field
Merge pull request #3 from kookster/master

Improved tests, dotenv, added audio files and versions models