update demo link

amstel91 · web-flow · commit be8e733ea97b · 2018-03-30T09:13:15.000+05:30
diff --git a/README.md b/README.md
@@ -2,6 +2,8 @@
 An Input Form Element to enter OTP Number, PIN or split single characters.
 ![Alt Text](https://github.com/amstel91/otp-input-directive/blob/master/demo.gif)
 
+### Demo Link - http://plnkr.co/edit/eCHuJT?p=preview
+
 ### Usage
 Add angular and otpInputDirective to your code
 
