Alter rake debug to compile bootstrap-responsive

.gitignore

@@ -1,3 +1,4 @@
 *.gem
 .sass-cache
-debug.css
+bootstrap.css
+bootstrap-responsive.css

Rakefile

@@ -11,8 +11,10 @@ task :debug do
   require './lib/bootstrap-sass/compass_functions'
   require './lib/bootstrap-sass/rails_functions'
   path = './vendor/assets/stylesheets'
-  engine = Sass::Engine.for_file("#{path}/_bootstrap.scss", syntax: :scss, load_paths: [path])
-  File.open('./debug.css', 'w') { |f| f.write(engine.render) }
+  %w(bootstrap bootstrap-responsive).each do |file|
+    engine = Sass::Engine.for_file("#{path}/_#{file}.scss", syntax: :scss, load_paths: [path])
+    File.open("./#{file}.css", 'w') { |f| f.write(engine.render) }
+  end
 end
 
 task default: :test