README.md in trackler-2.2.1.88

- old
+ new

@@ -29,9 +29,13 @@
  - conjugate, absolute value, exponent of a given complex number.
 
 
 Assume the programming language you are using does not have an implementation of complex numbers.
 
+## Hints
+
+See [Emulating numeric types](https://docs.python.org/2/reference/datamodel.html#emulating-numeric-types) for help on operator overloading.
+
 ## Exception messages
 
 Sometimes it is necessary to raise an exception. When you do this, you should include a meaningful error message to
 indicate what the source of the error is. This makes your code more readable and helps significantly with debugging. Not
 every exercise will require you to raise an exception, but for those that do, the tests will only pass if you include