Add processors sample to README

README.md

@@ -233,7 +233,16 @@ An example might look like this:
 	      - fstype = [ "ext4", "xfs" ]
     	  - path = [ "/opt", "/home" ]
 
-
+If you want to define processors you can simply use `telegraf_processors` variable.  
+An example might look like this:
+```
+telegraf_processors: 
+  - processor: rename
+  - processor: rename.replace  
+    config:
+        - tag = "level"
+        - dest = "LogLevel"
+```
 
 ## Dependencies