add rspec gem

configure it to output colour coded
add spec_helper file

require rspec and rack/test
require the app code
set the environment to test
define the application
include Rack::Test::Methods
add an example feature spec
add more examples for home page
rename feature spec file to more accurately reflect role
implement capybara testing

add capybara gem, change spec_helper to use it
actually implement Capybara testing

add capybara gem
in spec_helper, require 'capybara/rspec'
set Capybara.app to Sinatra::Application
add to RSpec.configure include Capybara::DSL
tag all example groups with type: :feature
add more tests for the home page
test the format of the xml response from form submission
add specs for requests

move from home page spec to here
rename spec file for xml;