Update readme

Author: AlexVanderbist

README.md

@@ -1,5 +1,7 @@
 # Webpack plugin for sending sourcemaps to Flare
 
+The Flare Webpack plugin helps you send sourcemaps of your compiled JavaScript code to Flare. This way, reports sent using the `@flareapp/flare-client` will be formatted correctly.
+
 Check JavaScript error tracking section in [the Flare documentation](https://flareapp.io/docs/javascript-error-tracking/installation) for more information.
 
 Flare client: https://www.npmjs.com/package/@flareapp/flare-client