some tests for versioning
updated some gems
api now uses versioning
removed old files
removed a pry.binding
add required secret key for devise 3.1
update urls
update paths to reflect new routes namespaces
fix serializers
update requests spec
introduces serializers versioning
Update README.md
Added some informations about versioning.
Merge pull request #2 from azendoo/api-versioning

API Versioning