lib/timing/zone_offset.rb in timing-0.0.5 vs lib/timing/zone_offset.rb in timing-0.0.6

@@ -6,11 +6,11 @@
     def initialize(seconds)
       raise ArgumentError, "#{seconds} is not a number" unless seconds.is_a? Numeric
       super
     end
 
-    def to_s
-      "#{sign}#{hour.to_s.rjust(2, '0')}#{minute.to_s.rjust(2, '0')}"
+    def to_s(separator=nil)
+      "#{sign}#{hour.to_s.rjust(2, '0')}#{separator}#{minute.to_s.rjust(2, '0')}"
     end
 
     def iso8601
       "#{sign}#{hour.to_s.rjust(2, '0')}:#{minute.to_s.rjust(2, '0')}"
     end
\ No newline at end of file