Traditionalized Ackley

Implements the traditional benchmark formulation used in optimization literature

In the global optimization and GADS toolboxes, "ackleyfcn.m" implements a different Ackley formulation than what is commonly used in optimization literature. For those who prefer the traditional benchmark formulation, this fix modifies the Ackley code of the Particle Swarm Optimization Research Toolbox* for compatibility with official MathWorks toolboxes.

To compare formulas, code, and graphs, please see the readme file.

* http://www.mathworks.com/matlabcentral/fileexchange/28291-particle-swarm-optimization-research-toolbox