added Middleware for themes

src/Tony/Themes/ThemeMiddleware.php

@@ -0,0 +1,26 @@
+<?php namespace Tony\Themes;
+
+use Closure;
+use Theme;
+
+/**
+ * Class ThemeMiddleware
+ * @package Modules\Base\Http\Middleware
+ */
+class ThemeMiddleware
+{
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @param  \Closure  $next
+     * @param  string|null  $guard
+     * @return mixed
+     */
+    public function handle($request, Closure $next, $theme = null)
+    {
+        Theme::set($theme);
+
+        return $next($request);
+    }
+}

src/Tony/Themes/ThemeServiceProvider.php

@@ -1,11 +1,17 @@
 <?php namespace Tony\Themes;
 
+use Illuminate\Routing\Router;
 use View;
 use Illuminate\Support\ServiceProvider;
 
 class ThemeServiceProvider extends ServiceProvider
 {
 
+	public function boot(Router $router)
+	{
+		$router->aliasMiddleware('theme', ThemeMiddleware::class);
+	}
+
 	/**
 	 * Register the service provider.
 	 *