Update bacon_cape link to point at demo page for now.

Rather than leaving a broken link on the bone101 page, it's cleaner to provide a link to the bacon_cape demo page.  Note that this is the same link that the left nav links to.
Fixed broken link to ImageWriter for Windows

Updated the link for ImageWriter to:  http://sourceforge.net/projects/win32diskimager/files/latest/download
cape_bacon: flipped analogWrite back around
cape_bacon: Updated to show LEDs as active-high