also write to guardfile

bin/cuke-pack

@@ -15,6 +15,24 @@ module CukePack
       directory '.', '.'
     end
 
+    desc "wip-guard", "Add the WIP guard to your Guardfile"
+    def wip_guard
+      FileUtils.touch 'Guardfile'
+
+      append_file 'Guardfile', <<-RB
+# added by cuke-pack
+
+group :wip do
+  guard 'cucumber', :env => :cucumber, :cli => '-p wip' do
+    watch(%r{^features/.+\.feature$})
+    watch(%r{^(app|lib).*})          { 'features' }
+    watch(%r{^features/support/.+$})          { 'features' }
+    watch(%r{^features/step_definitions/(.+)\.rb$}) { 'features' }
+  end
+end
+      RB
+    end
+
     default_task :install
   end
 end