README.md in api_signature-0.1.4 vs README.md in api_signature-0.1.5

@@ -95,10 +95,10 @@
 ```ruby
 options = {
   request_method: 'GET',
   path: '/api/v1/some_path'
   access_key: 'client public api_key',
-  timestamp: Time.zone.now.to_i
+  timestamp: Time.now.utc.to_i
 }
 
 signature = ApiSignature::Generator.new(options).generate_signature('api_secret')
 ```