Flickr API - Ruby on Rails App (Not running)

I'm following this tutorial to do a ruby on rails app that pulls photos from Flickr when you do a search, seems really simple but when I do "rails server" to see the results I get this on the terminal:

rails server

rails server Warning: You're using Rubygems 2.0.14 with Spring. Upgrade to at least Rubygems 2.1.0 and run gem pristine --all for better startup performance. => Booting WEBrick => Rails 4.2.5 application starting in development on http://localhost:3000 => Run rails server -h for more startup options => Ctrl-C to shutdown server Exiting /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:275:in check_part': Missing :controller key on routes definition, please check your routes. (ArgumentError) from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:255:incheck_controller_and_action' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:178:in normalize_options!' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:100:ininitialize' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:78:in new' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:78:inbuild' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:1560:in add_route' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:1537:indecomposed_match' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:1518:in block in match' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:1508:ineach' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:1508:in match' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:690:inmap_method' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/mapper.rb:659:in post' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config/routes.rb:3:inblock in ' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/route_set.rb:434:in instance_exec' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/route_set.rb:434:ineval_block' from /Library/Ruby/Gems/2.0.0/gems/actionpack-4.2.5/lib/action_dispatch/routing/route_set.rb:412:in draw' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config/routes.rb:1:in' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in load' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:inblock in load' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in load_dependency' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:inload' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:40:in block in load_paths' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:40:ineach' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:40:in load_paths' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:16:inreload!' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:26:in block in updater' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/file_update_checker.rb:75:incall' from /Library/Ruby/Gems/2.0.0/gems/activesupport-4.2.5/lib/active_support/file_update_checker.rb:75:in execute' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:27:inupdater' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/routes_reloader.rb:7:in execute_if_updated' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application/finisher.rb:69:inblock in ' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:in instance_exec' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/initializable.rb:30:inrun' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/initializable.rb:55:in block in run_initializers' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:150:inblock in tsort_each' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:183:in block (2 levels) in each_strongly_connected_component' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:219:ineach_strongly_connected_component_from' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:182:in block in each_strongly_connected_component' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:ineach' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:180:in each_strongly_connected_component' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/tsort.rb:148:intsort_each' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/initializable.rb:54:in run_initializers' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/application.rb:352:ininitialize!' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config/environment.rb:5:in <top (required)>' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config.ru:3:inrequire' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config.ru:3:in block in <main>' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:55:ininstance_eval' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:55:in initialize' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config.ru:innew' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/config.ru:in <main>' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:49:ineval' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:49:in new_from_string' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/builder.rb:40:inparse_file' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:299:in build_app_and_options_from_config' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:208:inapp' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/server.rb:61:in app' from /Library/Ruby/Gems/2.0.0/gems/rack-1.6.4/lib/rack/server.rb:336:inwrapped_app' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/server.rb:139:in log_to_stdout' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/server.rb:78:instart' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:80:in block in server' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:75:intap' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:75:in server' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:inrun_command!' from /Library/Ruby/Gems/2.0.0/gems/railties-4.2.5/lib/rails/commands.rb:17:in <top (required)>' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/bin/rails:9:inrequire' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/bin/rails:9:in <top (required)>' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/client/rails.rb:28:inload' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/client/rails.rb:28:in call' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/client/command.rb:7:incall' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/client.rb:28:in run' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/bin/spring:49:in' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/binstub.rb:11:in load' from /Library/Ruby/Gems/2.0.0/gems/spring-1.5.0/lib/spring/binstub.rb:11:in' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:in require' from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:55:inrequire' from /Users/javiersanchezsanchez/Documents/Ruby/Tests/flickr/bin/spring:13:in <top (required)>' from bin/rails:3:inload' from bin/rails:3:in `'

Anyone can help me?