Update README and add LICENSE file

Author: SagarBiswas-MultiHAT

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Sagar Biswas
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # Password Strength Checker
+
+<div align="right">
+
+[![Live](https://img.shields.io/badge/live-sagarbiswas-multihat.github.io%2Fpassword-strength-checker-brightgreen)](https://sagarbiswas-multihat.github.io/Password-Strength-Checker/)
+&nbsp;
+[![JavaScript](https://img.shields.io/badge/javascript-ES6-yellowgreen)](https://developer.mozilla.org/en-US/docs/Web/JavaScript)
+&nbsp;
+[![Accessibility](https://img.shields.io/badge/accessibility-a11y-blue)](#)
+&nbsp;
+[![License](https://img.shields.io/github/license/SagarBiswas-MultiHAT/Password-Strength-Checker)](https://github.com/SagarBiswas-MultiHAT/Password-Strength-Checker/blob/main/LICENSE)
+&nbsp;
+[![Last commit](https://img.shields.io/github/last-commit/SagarBiswas-MultiHAT/Password-Strength-Checker)](https://github.com/SagarBiswas-MultiHAT/Password-Strength-Checker/commits)
+
+</div>
+
 **What it is**
 A polished, accessible client-side password strength checker that estimates entropy, detects weak patterns, offers actionable suggestions, and includes a password generator. Suitable for demos, portfolios, or as a frontend component in larger projects.
 
-### live: https://sagarbiswas-multihat.github.io/password-strength-checker/
+### live: https://sagarbiswas-multihat.github.io/Password-Strength-Checker/
 
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