[docs] turtle speed does not work

[Tom O'Brien]

An example of this can be seen at tinyurl.com/mewv2ne
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> On Aug 1, 2014, at 14:18, Tom O'Brien <lillz at icloud.com> wrote:
> 
> Hello
> 
> In Python 2, an animation in turtle could be turned off, slowed down, or sped up with turtle.speed(). In python 3.4, this isn't the case. The documentation claims turtle.speed should work, but it doesn't change the speed of the animation. It doesn't give an error, but no matter the integer set inside turtle.speed, the speed won't change. 
> 
> Sent from my iPhone