Fix for chrome 52 on paths

Author: Grafikart

src/dynamics.coffee

@@ -173,7 +173,7 @@ getCurrentProperties = (el, keys) ->
           properties['transform'] = matrix.decompose()
       else
         v = style[key]
-        if !v? && svgProperties.contains(key)
+        if (!v? or key is 'd') && svgProperties.contains(key)
           v = el.getAttribute(key)
         if v == "" or !v?
           v = defaultValueForKey(key)