Realizando testes iniciais dos models de category e cast
Consertando arquivo .travis.yml
Adding pg gem to gemfile
Commit gemfile.lock
Modificando gemfile
Corrigindo gemfile
Update README.md
Commit
Merge branch 'develop' of https://github.com/thiagoramos23/screencast into develop

* 'develop' of https://github.com/thiagoramos23/screencast:
  Update README.md
Fazendo testes para o cast
Resolvendo conflitos