Wade Fitzpatrick waddles

## newton.go
/*
http://tour.golang.org/flowcontrol/8

Exercise: Loops and Functions
As a simple way to play with functions and loops, implement the square root function using Newton's method.

In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating:
		z^2 - x
	z = z - -------
		   2z
	/*
	http://tour.golang.org/flowcontrol/8

	Exercise: Loops and Functions
	As a simple way to play with functions and loops, implement the square root function using Newton's method.

	In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating:
	z^2 - x
	z = z - -------
	2z