[UPDATE] README.

README.md

@@ -52,14 +52,20 @@ arr = indexspace( '[:-2]', 5 );
 // returns [ 0, 1, 2 ]
 ```
 
-The function also recognizes the `end` keyword, which refers to the last index; i.e., `len-1`. If specified as the `stop` index, `end` is inclusive.
+The function also recognizes the `end` keyword, which refers to the last index; i.e., `len-1`. If specified as the `stop` index, `end` is __inclusive__.
 
 ``` javascript
 var arr = indexspace( '[end::-1]', 5 );
 // returns [ 4, 3, 2, 1, 0 ]
 
 arr = indexspace( '[:end]', 5 );
 // returns [ 0, 1, 2, 3, 4 ]
+
+arr = indexspace( '[:end/2]', 5 );
+// returns [ 0, 1 ]
+
+arr = indexspace( '[end/2:]', 5 );
+// returns [ 2, 3, 4 ]
 ```
 
 Basic arithmetic (subtraction and division) may be performed on the `end` keyword. The result from division is rounded up to the next integer.