clockwork in clockwork-2.0.4

- old
+ new

@@ -2,10 +2,10 @@
 
 STDERR.sync = STDOUT.sync = true
 
 require 'clockwork'
 
-usage = 'clockwork <clock.rb>'
+usage = 'Usage: clockwork <clock.rb>'
 file = ARGV.shift or abort usage
 
 file = "./#{file}" unless file.match(/^[\/.]/)
 
 require file