Updated Wind 64-bit precompiled libsass

With the most recent NPM version, I cannot compile @keyframes in my .SCSS files.

I recompiled on my Win 8 box, and it now works. I made sure I was using the most up-to-date versions before I decided to recompile.

Just to reiterate, the latest NPM version does not work with @keyframes on Win 8 64-bit.