If {command}_error method is not present then display default error i…

…nfo anyways

src/main/resources/purugin/command.rb

@@ -142,7 +142,14 @@ def syntax_generated_command(name, syntax)
           end
         end
 
-        send "#{name}_error", sender, *args unless match
+        unless match
+          if respond_to? "#{name}_error"
+            send "#{name}_error", sender, *args 
+          else
+            sender.msg "Invalid command: /#{name} #{args.join(' ')}"
+            sender.msg "Syntax: #{syntax}"
+          end
+        end
       end
     end