bin/metrics-nginx.rb in sensu-plugins-nginx-3.0.0 vs bin/metrics-nginx.rb in sensu-plugins-nginx-3.1.0

@@ -1,5 +1,7 @@
 #! /usr/bin/env ruby
+# frozen_string_literal: true
+
 #
 #   nginx-metrics
 #
 # DESCRIPTION:
 #   Pull nginx metrics for backends through stub status module