roll back readme file

README.md

@@ -8,26 +8,6 @@ Scratch card  is based on HTML5, it generates canvas on the fly and is optimized
 
 Please visit the [demo](https://saifjerbi.github.io/scratch-card) and enjoy the scratch card
 
-<!--
-```
-<custom-element-demo>
-  <template>
-    <link rel="import" href="scratch-card.html">
-    <next-code-block></next-code-block>
-  </template>
-</custom-element-demo>
-```
--->
-```html
-<scratch-card 
-            background="demo/images/background01.png" 
-            foreground="demo/images/foreground01.png"
-            percent=80
-            thickness=15
-            load>
-</scratch-card>
-```
-
 ## Installation
 
 To install the scratch-card