update plotcss.js for 1.39.2

Author: etpinard

build/plotcss.js

@@ -2,7 +2,7 @@
 
 var Lib = require('../src/lib');
 var rules = {
-    "X,X div": "font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;",
+    "X,X div": "direction:ltr;font-family:'Open Sans', verdana, arial, sans-serif;margin:0;padding:0;",
     "X input,X button": "font-family:'Open Sans', verdana, arial, sans-serif;",
     "X input:focus,X button:focus": "outline:none;",
     "X a": "text-decoration:none;",