fix scaling issue

Author: ivmarcos

lib/index.js

@@ -55,7 +55,11 @@ var ReactToPdf = function (_PureComponent) {
       if (!targetComponent) {
         throw new Error('Target ref must be used or informed. See https://github.com/ivmarcos/react-to-pdf#usage.');
       }
-      (0, _html2canvas2.default)(targetComponent, { logging: false }).then(function (canvas) {
+      (0, _html2canvas2.default)(targetComponent, {
+        logging: false,
+        useCORS: true,
+        scale: this.props.scale
+      }).then(function (canvas) {
         var imgData = canvas.toDataURL('image/png');
         var pdf = new _jspdf2.default(options);
         pdf.addImage(imgData, 'JPEG', x, y);
@@ -79,6 +83,7 @@ ReactToPdf.defaultProps = {
   filename: 'download.pdf',
   x: 0,
   y: 0,
+  scale: 1,
   onComplete: undefined,
   targetRef: undefined
 };