Kata

This is a simple Kata to test your knowledge of generators. You will create a generator function which produces a fibonacci sequence. The first number in the sequence is 0. The next number in the sequence is 1. Each subsequent number is the summation of the previous two numbers. The next number after 1 would be 1 because 0 + 1 = 1. The next number would be 2 because 1 + 1 = 2.

The fibonacci sequence starts at zero, calling fib.next() should step through the next number in the fibonacci sequence and fib.next().value will step through and produce the value.