add link to video of live preview feature

README.md

@@ -1,6 +1,7 @@
 # inkscape-embroidery: An Inkscape plugin for designing machine embroidery patterns
 
 **NEW December 6, 2017:** [video demo of how to use the extension](https://www.youtube.com/watch?v=qXntE1X1RIw)
+**NEW January 1, 2018:** [video demo of the new live stitch preview feature](https://youtu.be/QY9NcLN3oJM)
 
 ## Introduction
 **Want to design embroidery pattern files (PES, DST, etc) using free, open source software?  Hate all the other options?  Try this one.**