Lib: Fix regexp in getTranslate

* Fixed regexp in Lib.getTranslate to accept negative values.

Author: n-riesco

src/lib/index.js

@@ -453,7 +453,7 @@ lib.addStyleRule = function(selector, styleString) {
 
 lib.getTranslate = function(element) {
 
-    var re = /.*\btranslate\((\d*\.?\d*)[^\d]*(\d*\.?\d*)[^\d].*/,
+    var re = /.*\btranslate\((-?\d*\.?\d*)[^-\d]*(-?\d*\.?\d*)[^\d].*/,
         getter = element.attr ? 'attr' : 'getAttribute',
         transform = element[getter]('transform') || '';