public function postSignUp(Request $request)
{
     $this->validate($request, [
         'email' => 'required|email|unique:users',
         'name' => 'required|max:120',
         'password' => 'required|min:4'
         ]);
     $name = $request['name'];
     $email = $request['email'];
     $password = bcrypt($request['password']);

     $user = new User();
     $user->name = $name;
     $user->email = $email;
     $user->password = $password;
     $user->save();
     Auth::login($user);

     return redirect()->route('dashboard');
}

Route::group(['middleware' => 'web'], function() {
    Route::get('/', function () {
        return view('welcome');
    });
    Route::post('signup', [
        'uses' => 'UserController@postSignUp',
        'as' => 'signUp'
    ]);
    Route::post('signin', [
        'uses' => 'UserController@postSignIn',
        'as' => 'signin'
    ]);
});

@if(count($errors) > 0)
    @foreach($errors->all() as $error)
        {{ $error }}
    @endforeach
@endif