added description of welcome page feature to the project
added root_path and created welcome controller for the welcome step
revised welcome_controller_spec
added welcome view spec and made it pass in spec and step file
revised welcome feature to add one more step into step file
added title 'Please enter any message for your QR code below:' into welcome/index.html.erb to make spec and step file all pass
added qrcodes_path in routes.rb
added complete form into welcome index view and made feature and spec pass
removed unused helper spec
Merge branch 'master' of https://github.com/JohnChang2014/QRcodeCreator