Add chrome and firefox links

README.md

@@ -1,5 +1,19 @@
 # Twilio Console Plus
 
+<p align="center">
+  <a href="LICENSE" target="_blank">
+    <img alt="MIT License" src="https://img.shields.io/github/license/aahung/twilio-console-plus.svg?style=flat-square" />
+  </a>
+
+  <a href="https://chromewebstore.google.com/detail/twilio-console-plus/jnfdlgjcofdjielkhbffdlblijbecome" target="_blank">
+    <img alt="Chrome" src="https://img.shields.io/chrome-web-store/stars/jnfdlgjcofdjielkhbffdlblijbecome?color=blue&label=Chrome&style=flat-square&logo=google-chrome&logoColor=white" />
+  </a>
+
+  <a href="https://addons.mozilla.org/en-US/firefox/addon/twilio-console-plus/" target="_blank">
+    <img alt="Firefox" src="https://img.shields.io/amo/stars/twilio-console-plus?color=orange&label=Firefox&style=flat-square&logo=firefox&logoColor=white" />
+  </a>
+</p>
+
 ## Build
 
 ```sh