delete example folder, reword description

Author: soywod

example/.gitignore

@@ -1,5 +1,5 @@
 {
-  description = "React hook for managing reducers and effects together.";
+  description = "React hook for managing effects within reducers.";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";

example/index.html

@@ -1,7 +1,7 @@
 {
   "name": "react-use-bireducer",
   "author": "soywod <clement.douin@posteo.net>",
-  "description": "React hook for managing reducers and effects together.",
+  "description": "React hook for managing effects within reducers.",
   "version": "1.0.0",
   "license": "MIT",
   "source": "src/index.ts",