Update README.md

Author: andreasdr

README.md

@@ -56,7 +56,7 @@ Also note the focus on easy integration into other products and easy customizabi
     - select($first, $a, $b)
     - returnReference($value)
   - new array method
-    - Array::insert($index, $value) 
+    - Array::insert($array, $index, $value) 
   - more MinitScript example/test scripts  
     - about 3 computer science examples
       - binary tree