ref http://docs.ansible.com/ansible/intro_installation.html
$ ansible-galaxy install -r requirements.yml -p roles -v -f
$ cp vars/settings_dev.yml.example vars/settings_dev.yml
$ cp playbook_dev_all.yml.example playbook_dev_all.yml
ref http://docs.ansible.com/ansible/intro_installation.html
$ ansible-galaxy install -r requirements.yml -p roles -v -f
$ cp vars/settings_dev.yml.example vars/settings_dev.yml
$ cp playbook_dev_all.yml.example playbook_dev_all.yml