Update Main.cpp

Tests the complex-coloring updates mentioned before (esp. see Complex.h, GraphicBitmapBasics.cpp updates).

And it works!
Here's exp(1/z), in the unit square [-1/2, +1/2]^2:
http://3.bp.blogspot.com/-J1_nkDKt_8k/U-Kh5S0gqCI/AAAAAAAABHo/uZFeTV28Uuc/s320/JL.bmp