Instalar postgresql no rails

Instalar o PostgreSQL
1) Sacar Installer version Version 9.4.5 (http://www.enterprisedb.com/products-services-training/pgdownload)
2) Instalar:
-Next
-Escolher caminho se possível sem espaços porque pode dar um erro (mas no meu não deu ex.: C:\Program Files\PostgreSQL\9.4)
-Escolher o caminho para a data (ex.:C:\Program Files\PostgreSQL\9.4\data)
-Escolher password "postgres".
-Deixar a porta default : 5432
-Deixar default locale
-Next
-Não instalar o Launch Stack Builder e clicar Finish.
3) Definir as variaveis de ambiente no Path :
ex.: C:\Program Files\PostgreSQL\9.4\bin e C:\Program Files\PostgreSQL\9.4\lib
4) Iniciar o pgAdmin III e clicar na PostgreSQL 9.4 (localhost 5432) duas vezes.
- Por a password "postgres".
5)Abrir a consola e correr:
->gem install pg
->rails new blog -d postgresql (para criar um projecto novo)
->bundle config build.pg --with-pg-config=C:\Program Files\PostgreSQL\9.4\bin\pg_config.exe
6)Abrir o database.yml dentro da pasta config do protejo e alterar o "development","test","production" para:

development:
    adapter: postgresql
    database: ldso_db
    username: postgres
    password: postgres
    host: localhost
    encoding: UTF8

test:
    adapter: postgresql
    database: ldso_db
    username: postgres
    password: postgres
    host: localhost
    encoding: UTF8

production:
    adapter: postgresql
    database: ldso_db
    username: postgres
    password: postgres
    host: localhost
    encoding: UTF8

->rails server

Bibliografia:
https://netpie.wordpress.com/2011/03/17/setting-up-rails-3-with-postgresql-on-windows/
https://c.kat.pe/installing-postgresql-and-the-postgresql-ruby-gem-for-windows-linux-and-mac-os-x#.Vii61PmrShf
https://www.youtube.com/watch?v=qd6WF32-fm0