JPAConfiguration para Postgres

Caso alguém precise, segue configuração para postgres. (verificar usuário e senha)

@Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();

        factoryBean.setJpaVendorAdapter(vendorAdapter);

        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setUsername("postgres");
        dataSource.setPassword("postgres");
        dataSource.setUrl("jdbc:postgresql://localhost:5432/casadocodigo");
        dataSource.setDriverClassName("org.postgresql.Driver");

        factoryBean.setDataSource(dataSource);

        Properties props = new Properties();
        props.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
        props.setProperty("hibernate.show_sql", "true");
        props.setProperty("hibernate.hbm2ddl.auto", "update");

        factoryBean.setJpaProperties(props);

        factoryBean.setPackagesToScan("br.com.casadocodigo.loja.models");

        return factoryBean;
    }

No pom.xml adicionei:

<dependency>
  <groupId>postgresql</groupId>
  <artifactId>postgresql</artifactId>
  <version>9.1-901-1.jdbc4</version>
</dependency>