Very easy start to operator overloading
https://www.geeksforgeeks.org/operator-overloading-c/

More info about operator overloading.
https://www.tutorialspoint.com/cplusplus/cpp_overloading.htm

Old Fraction stuff
* Make a constructor
* Make a set method that takes two ints, and creates a fraction.
* Make a reduce method that reduces a fraction to simplest form.
New Fraction stuff
* Overload ostream like this:  
  https://msdn.microsoft.com/en-us/library/1z2f6c2k.aspx
* Overload the istream operator.  I should be able to type in "1 / 6" for the 
  fraction one-sixth.  See 
  http://www.tutorialspoint.com/cplusplus/input_output_operators_overloading.htm 
* Make f3 = f1 work.
* Make f3 = 1.2345 work
* Make f3 = f1 + f2 work.
* Make f3 = f1 + 12 work
* Make f3 = 12 + f1 work
* Make "if (f1 < f2)" work
* Make f3 = -f1 work
* Make double d = (double)f3 work
  See https://www.learncpp.com/cpp-tutorial/910-overloading-typecasts/

Four working by Wed Oct 23th.
Final working product due Wed Oct 31.