Update README.rdoc with new capybara instructions
Update README.rdoc with new capybara instructions

apotonick/rspec-cells,timoschilling/rspec-cells,PikachuEXE/rspec-cells,timoschilling/rspec-cells,CJBrew/rspec-cells,PikachuEXE/rspec-cells,CJBrew/rspec-cells,apotonick/rspec-cells