Update README.md

README.md

@@ -14,6 +14,7 @@ You can use the default json api by calling: [https://status.gitlab.com/status/a
 "http response time":[{"time":1469104321,"state":0,"value":"0.408527s"},...]
 }
 ```
+Every key holds multiple monitor samples, the last sample in the array is the most recent monitor sample.
 ### JSON attributes
 - **time:** epoch timestamp