Merge pull request #1 from danielalencar/master

Adding the persistence infrastructure
Adicionados alguns campos para Evaluation
Merge pull request #2 from adorilson/master

Adicionado alguns campos para Evaluation
Adicao dos campos id_user e id_article para Evaluation
Merge branch 'master' of https://github.com/danielcalencar/pubnotes-server
Merge pull request #3 from adorilson/master

 Adicao dos campos id_user e id_article para Evaluation
1. Adding the server method for retrieving the evaluations for a
specific Article