Plotting the Szegocurve in Matlab, beginner

Hello, i'm a 1st bachelor student biochemics and biotechnology and we have an assignment for math in matlab. In one of the exercises i have to plot the roots of the polynome of exp(x) devided by n (where n = grade). It says that when n reaches a great number, the curve will look similar to the Szegocurve (demonstrations.wolfram.com/SzegoeCurve/) The Szegocurve:

abs(z*exp(1-z)) = 1   ,   abs(z) =< 1

I can plot functions like y = x², but i really dont have a clue of how to plot this szegocurve. This is what I have thus far:

z = -1:0.1:1
p = abs(z.*exp(1-z)) - 1
r2 = roots(p)
plot(real(r2),imag(r2))

this part doesn't give me the right curve (P.S. If someone else of my class reads this question, don't copy this or we'll both get a zero ;-) )