Update README.md

Author: Daniel

README.md

@@ -20,6 +20,12 @@ It was modified with:
 * .TXT
 * .XYZ
 
+## Output file structure 
+
+* cloud_cluster.txt: 
+
+        - x y z r g b
+
 ## Example
 <img src="./example/scan1.png" align="center" height="400" width="720"><br>
 <img src="./example/example2.png" align="center" height="400" width="720"><br>