added locals support

Added locals support.
pass in data to bind to using options.locals

lib/index.js

@@ -19,14 +19,16 @@ function jadepdf(options) {
   options.paperOrientation = options.paperOrientation || 'portrait';
   options.paperBorder = options.paperBorder || '1cm';
   options.renderDelay = options.renderDelay || 500;
+  options.locals = options.locals || {};
 
   var jadeStr = '';
   var jadeToHtml = through(
     function write(data) {
       jadeStr += data;
     }
   , function end() {
-      var html = jade.compile(jadeStr)();
+      var fn = jade.compile(jadeStr);
+      var html = fn(options.locals);
       this.queue(html);
       this.queue(null);
     }