Add a StaticPages controller

$ rails generate controller StaticPages home help --no-test-framework
request spec for static_pages

$ rails generate integration_test static_pages
case for Home page
add Capybara DSL to RSpec helper
modify Home page
case for Help page
modify Help page
case for About page
add route for About page
add action of 'about' for About page in controller
add view for About
Merge branch 'static-pages'
temporarily not use layouts and add case for title
use the standard Html structure
use embedded ruby, provide and yield method
use layout
Merge branch 'refactor_for_static_pages'