diff --git a/README.md b/README.md
index 9a988f33..4335400e 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@
 
 Более подробно о нем можно прочитать по [этой ссылке (хабр)][habr].
 
+Крайне рекомендую использовать `php` версии 7 и выше по соображениям производительности.
+
 ### Установка
 
 Для развертывания приложения достаточно выполнить в терминале:
diff --git a/app/Services/HostsParser/HostsParser.php b/app/Services/HostsParser/HostsParser.php
index fd0f6549..081eb5ab 100644
--- a/app/Services/HostsParser/HostsParser.php
+++ b/app/Services/HostsParser/HostsParser.php
@@ -170,16 +170,28 @@ public function addExcludedHosts($hosts_names)
      */
     public function isValidHostname($hostname)
     {
-        //static $regexp = '((([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*'
-        //    . '([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9]))';
-        if (is_string($hostname) && ! empty($hostname)) {
-            if (mb_strpos($hostname, ' ') === false) { // It's faster
-                //if ((bool) preg_match('/^' . $regexp . '$/', $hostname)) {
-                return true;
+        static $regexp = '((([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*'
+            . '([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9]))';
+
+        static $stack = [];
+
+        $hostname = (string) $hostname;
+
+        if (isset($stack[$hostname])) {
+            return $stack[$hostname];
+        } else {
+            if (is_string($hostname) && ! empty($hostname)) {
+                if ((bool) preg_match('/^' . $regexp . '$/', $hostname)) {
+                    $stack[$hostname] = true;
+
+                    return $stack[$hostname];
+                }
             }
+
+            $stack[$hostname] = false;
         }
 
-        return false;
+        return $stack[$hostname];
     }
 
     /**
@@ -408,14 +420,14 @@ public function render($limit = 0, $entry_comment = 'ADBlock', $format = 'router
 
             $entry_comment = str_replace(' ', '', $entry_comment);
             foreach ($hosts as $host) {
-                //                $result .= sprintf(
-//                    "add address=%s name=%s comment=%s\n",
-//                    $this->redirect_to,
-//                    $host,
-//                    $entry_comment
-//                );
+                $result .= sprintf(
+                    "add address=%s name=%s comment=%s\n",
+                    $this->redirect_to,
+                    $host,
+                    $entry_comment
+                );
                 // It's faster:
-                $result .= 'add address=' . $this->redirect_to . ' name=' . $host . ' comment=' . $entry_comment . "\n";
+                //$result .= 'add address=' . $this->redirect_to . ' name=' . $host . ' comment=' . $entry_comment . "\n";
             }
         }
 
diff --git a/composer.json b/composer.json
index 28bcf50d..139b9e31 100644
--- a/composer.json
+++ b/composer.json
@@ -28,9 +28,13 @@
         ]
     },
     "scripts": {
-        "post-root-package-install": [
-            "php -r \"copy('.env.example', '.env');\""
-        ]
+        "post-install-cmd": [
+            "php -r 'list($s, $t) = [\"./.env.example\", \"./.env\"]; file_exists($t) || copy($s, $t);'"
+        ],
+        "post-update-cmd": [
+            "php -r 'list($s, $t) = [\"./.env.example\", \"./.env\"]; file_exists($t) || copy($s, $t);'"
+        ],
+        "test": "./vendor/bin/phpunit --no-coverage"
     },
     "minimum-stability": "dev",
     "prefer-stable": true
diff --git a/config/app.php b/config/app.php
index f40d99dd..22504db1 100644
--- a/config/app.php
+++ b/config/app.php
@@ -3,7 +3,7 @@
 return [
 
     // Версия
-    'version' => '2.0.1',
+    'version' => '2.0.2',
 
     /*
     |--------------------------------------------------------------------------
diff --git a/nginx.conf.sample b/nginx.conf.sample
new file mode 100644
index 00000000..d920c897
--- /dev/null
+++ b/nginx.conf.sample
@@ -0,0 +1,26 @@
+server {
+  listen      80;
+  server_name your.domain.com;
+  root        /path_to/mikrotik-hosts-parser/public;
+  access_log  off;
+  error_log   off;
+
+  index index.php index.html index.htm;
+
+  location / {
+    try_files $uri $uri/ /index.php$is_args$args;
+  }
+
+  location ~* \.(js|css|png|jpg|jpeg|gif|ico)$ {
+    access_log off;
+    log_not_found off;
+    expires 1M;
+  }
+
+  location ~ \.php$ {
+    include fastcgi_params;
+    fastcgi_pass php;
+  }
+
+  location ~ /\.ht {return 444;}
+}
\ No newline at end of file
diff --git a/phpunit.xml b/phpunit.xml
index c703297e..4f608f28 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -16,7 +16,7 @@
     </testsuites>
     <filter>
         <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./app</directory>
+            <directory suffix="Test.php">./app</directory>
         </whitelist>
     </filter>
     <php>
diff --git a/tests/ExampleTest.php b/tests/ExampleTest.php
index 998f963c..e113974e 100644
--- a/tests/ExampleTest.php
+++ b/tests/ExampleTest.php
@@ -4,14 +4,29 @@
 class ExampleTest extends TestCase
 {
     /**
-     * A basic test example.
+     * Test of index page.
      *
      * @return void
      */
-    public function testExample()
+    public function testIndexPage()
     {
         $response = $this->get('/');
 
         $response->assertResponseStatus(200);
     }
+
+    /**
+     * Test of script source page.
+     *
+     * @return void
+     */
+    public function testScriptSourcePage()
+    {
+        $response = $this->get('/script/source?format=routeros&version=2.0.2&redirect_to=127.0.0.2&limit=666&sources_urls=https%3A%2F%2Fcdn.rawgit.com%2Ftarampampam%2Fstatic%2Fmaster%2Fhosts%2Fblock_shit.txt&excluded_hosts=localhost');
+
+        $response->assertResponseOk();
+        $this->assertContains('Script generated', $response->response->getContent());
+
+        $response->assertResponseStatus(200);
+    }
 }