rename macro - set_current_user
add clean_current_user macro and moved testing method of redirect to root path when unauthenticated
modify set_current_user macro
add shared_examples - 'require_sign_in'
install capybara and launchy gem, and add feature testing for user sign in
add integration/feature testing for manage my queue
setup pry-remote, guard and livereload gem
improve function testing of queue items controller spec
Merge pull request #6 from ArthurPai/feature/refactoring_testing_and_add_feature_spec

Feature/refactoring testing and add feature spec