Update Making-Icons.md with isntructions about modifying gruntion's helper js file.
Update Making-Icons.md with isntructions about modifying gruntion's helper js file.

chriscorwin/fuelux-mctheme,interactivellama/fuelux-mctheme,dwaltz/fuelux-mctheme,ExactTarget/fuelux-mctheme,dwaltz/fuelux-mctheme,interactivellama/fuelux-mctheme,BenjaminNeilDavis/fuelux-mctheme,ExactTarget/fuelux-mctheme,swilliamset/fuelux-mctheme,BenjaminNeilDavis/fuelux-mctheme,chriscorwin/fuelux-mctheme,TheJaredWilcurt/fuelux-mctheme,TheJaredWilcurt/fuelux-mctheme,swilliamset/fuelux-mctheme