Enter in number press GO!

Fizz Buzz examples.

We have three routes FizzBuzz is being run here.
The first is done by using an array and pushing each new
word or number to end of array.
The second is a simple append to html div.
The third requires a users input. This is passed to an
onclick function which is called when the user presses GO!
The code will work out what number you entered and will run
until that number.