Updated Mapping (markdown)

Mapping.md

@@ -11,20 +11,20 @@ Use this edit page to create a file called `ledmap.json`.
 `ledmap.json` file needs to be a JSON formatted file with the the key being "map" and the value being an array of numbers representing the new order of pixels. The _position_ of values in the array is the "natural" order of LEDs and the value entered is the new position.
   
 The ArduinoJSON library is *****extremely***** white-space sensitive.
-If your `ledmap.json` file is not working, check for white-spaces where they should not be.
+If your `ledmap.json` file is not working, check for white-spaces where they should not be. The LED positions are zero-indexed.
  
 ### Examples 
-In the below example (formatted multiple ways), we remap a strip of four LEDs from a physical order of 1 2 3 4 into a new order of 1 3 2 4.
+In the below example (formatted multiple ways), we remap a strip of four LEDs from a physical order of 0 1 2 3 into a new order of 0 2 1 3.
 
-    {"map":[1,3,2,4]}
+    {"map":[0,2,1,3]}
 
     {"map":[
-    1,3,2,4
+    0,2,1,3
     ]}
 
     {"map":[
-    1,3,
-    2,4
+    0,2,
+    1,3
     ]}