Added KiCad install info with version numbers

Author: marshalltaylorSFE

README.md

@@ -26,6 +26,12 @@ Resource
 
 * [The KiCad site](http://kicad-pcb.org/)
 
+** KiCad installation
+
+* Download KiCad stable version 4.0.5 from [http://kicad-pcb.org/download/](http://kicad-pcb.org/download/windows/) and install
+* After install, you'll be prompted to install "Wings 3D", check this box to be redirected to [http://www.wings3d.com/](http://www.wings3d.com/)
+* Download and install the stable release 2.1.5
+
 License Information
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