Update README.md

Author: NayeemKaka

Modern Development/Service Portal Widgets/Emoji Replacer Widget/README.md

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+## Emoji Replacer
+
+The JSON Beautifier widget is a developer-focused tool designed to make working with JSON in ServiceNow fast, easy and efficient. It helps admins, developers and testers handles JSON payloads from APIs, Integration etc.
+
+## Benefits
+- Reduces time spent manually formatting or checking JSON.
+- Helps identify error or differences between JSOn payload quickly
+  
+## Output