adding-help: commit enabled help

lib/feature/help.rb

@@ -7,11 +7,19 @@ module Feature
       true
     end
 
-    def usage
-      exit
+    def help
+      "feature help"
     end
 
     def execute
+      puts
+      # TODO: fix this
+      commander = Feature::Commander.new(argv)
+      commander.subcommands.keys.sort.each do |key|
+        cmd = commander.subcommands[key]
+        puts cmd.help
+      end
+      puts
     end
   end