Added LocaleCookieRedirect Middleware to Readme (#669)

Also made it compatible for the case that its used
with hidden default locale and accept header.

Closes #613

README.md

@@ -175,6 +175,20 @@ In there is no locale present in the url, then this middleware will check the fo
 
 For example, if a user navigates to http://url-to-laravel/test  and `en` is the current locale, it would redirect him automatically to http://url-to-laravel/en/test.
 
+#### LocaleCookieRedirect
+
+Similar to LocaleSessionRedirect, but it stores value in a cookie instead of a session.
+
+Whenever a locale is present in the url, it will be stored in the session by this middleware.
+
+In there is no locale present in the url, then this middleware will check the following
+
+ - If no locale is saved in cookie and `useAcceptLanguageHeader` is set to true, compute locale from browser and redirect to url with locale.
+ - If a locale is saved in cookie redirect to url with locale, unless its the default locale and `hideDefaultLocaleInURL` is set to true.
+
+For example, if a user navigates to http://url-to-laravel/test  and `de` is the current locale, it would redirect him automatically to http://url-to-laravel/de/test.
+
+
 #### LaravelLocalizationRedirectFilter
 
 When the default locale is present in the url and `hideDefaultLocaleInURL` is set to true, then the middleware redirects to the url without locale.

src/Mcamara/LaravelLocalization/Middleware/LocaleCookieRedirect.php

@@ -2,6 +2,7 @@
 
 use Closure;
 use Illuminate\Http\RedirectResponse;
+use Illuminate\Support\Facades\Cookie;
 
 class LocaleCookieRedirect extends LaravelLocalizationMiddlewareBase
 {
@@ -26,6 +27,19 @@ public function handle($request, Closure $next) {
          if (\count($params) > 0 && app('laravellocalization')->checkLocaleInSupportedLocales($params[0])) {
             return $next($request)->withCookie(cookie()->forever('locale', $params[0]));
          }
+         elseif(empty($locale) && app('laravellocalization')->hideUrlAndAcceptHeader()){
+           // When default locale is hidden and accept language header is true,
+           // then compute browser language when no session has been set.
+           // Once the session has been set, there is no need
+           // to negotiate language from browser again.
+           $negotiator = new LanguageNegotiator(app('laravellocalization')->getDefaultLocale(), app('laravellocalization')->getSupportedLocales(), $request);
+           $locale     = $negotiator->negotiateLanguage();
+           Cookie::queue(Cookie::forever('locale', $locale));
+         }
+
+         if($locale === false){
+           $locale = app('laravellocalization')->getCurrentLocale();
+         }
 
          if ($locale && app('laravellocalization')->checkLocaleInSupportedLocales($locale) && !(app('laravellocalization')->isHiddenDefault($locale))) {
            $redirection = app('laravellocalization')->getLocalizedURL($locale);