dev/runner in passenger-4.0.46 vs dev/runner in passenger-4.0.48

@@ -1,5 +1,11 @@
 #!/usr/bin/env ruby
+#
+# Usage: ./dev/runner <CODE>
+#
+# Evaluates Ruby code in an environment that has the Phusion Passenger
+# libraries loaded.
+
 require File.expand_path(File.dirname(__FILE__) + "/../lib/phusion_passenger")
 PhusionPassenger.locate_directories
 
 while true
 	if ARGV[0] =~ /^-r(.*)/