doc: add useHistory and auth with userEmailand Password

src/Auth/Login.js

@@ -1,10 +1,12 @@
 import React, { useState } from "react";
-import { Link } from "react-router-dom";
+import { Link, useHistory } from "react-router-dom";
+import { auth } from "./firebaseInit";
 import "./Login.css";
 
 function Login() {
   const [email, setEmail] = useState("");
   const [password, setPassword] = useState("");
+  const history = useHistory();
 
   const signIn = (e) => {
     e.preventDefault();
@@ -12,6 +14,14 @@ function Login() {
 
   const register = (e) => {
     e.preventDefault();
+    auth
+      .createUserWithEmailAndPassword(email, password)
+      .then((auth) => {
+        if (auth) {
+          history.push("/");
+        }
+      })
+      .catch((error) => alert(error.message));
   };
   return (
     <section className="login">