rails generate spine:new failure

Fixed failure in "rails generate spine:new"

Associated error messages:

[WARNING] Could not load generator "generators/spine/new/new_generator". Error: /home/.../.bundler/ruby/1.8/spine-rails-4ee9f0fb1224/lib/generators/spine/new/new_generator.rb:10: syntax error, unexpected ':', expecting kEND
      class_option :app, type: :string, default: "app", desc...



[WARNING] Could not load generator "generators/spine/new/new_generator". Error: /home/.../.bundler/ruby/1.8/spine-rails-4ee9f0fb1224/lib/generators/spine/new/new_generator.rb:40: syntax error, unexpected ':', expecting kEND
          inject_into_file source, before: "//= require_tree ." do