diff --git a/build.sh b/build.sh
index 83f483f..1718623 100755
--- a/build.sh
+++ b/build.sh
@@ -6,6 +6,9 @@ composer install
 # copy backend
 cp -rv src/{backend.php,config.sample.php} dist/
 
+# install javascript dependencies
+npm install
+
 # build Javascript frontend
 npm run build
 
diff --git a/composer.lock b/composer.lock
index 591a68a..e7d1308 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "d4d6c6077bbcd7958a06026e4117a70b",
+    "hash": "18ba77805fd530e1972050e6de7cd151",
     "content-hash": "357059f60b3f57be6e5f15b1df393a72",
     "packages": [
         {
diff --git a/dist/backend-libs/autoload.php b/dist/backend-libs/autoload.php
index 3863900..1f97304 100644
--- a/dist/backend-libs/autoload.php
+++ b/dist/backend-libs/autoload.php
@@ -4,4 +4,4 @@
 
 require_once __DIR__ . '/composer' . '/autoload_real.php';
 
-return ComposerAutoloaderInit38e9d02473bfdb3672d6b8a39de2fbc0::getLoader();
+return ComposerAutoloaderInit125dddd280a32cf75b181166154246ec::getLoader();
diff --git a/dist/backend-libs/composer/ClassLoader.php b/dist/backend-libs/composer/ClassLoader.php
index ff6ecfb..ac67d30 100644
--- a/dist/backend-libs/composer/ClassLoader.php
+++ b/dist/backend-libs/composer/ClassLoader.php
@@ -53,8 +53,8 @@ class ClassLoader
 
     private $useIncludePath = false;
     private $classMap = array();
-
     private $classMapAuthoritative = false;
+    private $missingClasses = array();
 
     public function getPrefixes()
     {
@@ -322,20 +322,20 @@ class ClassLoader
         if (isset($this->classMap[$class])) {
             return $this->classMap[$class];
         }
-        if ($this->classMapAuthoritative) {
+        if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
             return false;
         }
 
         $file = $this->findFileWithExtension($class, '.php');
 
         // Search for Hack files if we are running on HHVM
-        if ($file === null && defined('HHVM_VERSION')) {
+        if (false === $file && defined('HHVM_VERSION')) {
             $file = $this->findFileWithExtension($class, '.hh');
         }
 
-        if ($file === null) {
+        if (false === $file) {
             // Remember that this class does not exist.
-            return $this->classMap[$class] = false;
+            $this->missingClasses[$class] = true;
         }
 
         return $file;
@@ -399,6 +399,8 @@ class ClassLoader
         if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
             return $file;
         }
+
+        return false;
     }
 }
 
diff --git a/dist/backend-libs/composer/autoload_real.php b/dist/backend-libs/composer/autoload_real.php
index 852a29b..d7598fc 100644
--- a/dist/backend-libs/composer/autoload_real.php
+++ b/dist/backend-libs/composer/autoload_real.php
@@ -2,7 +2,7 @@
 
 // autoload_real.php @generated by Composer
 
-class ComposerAutoloaderInit38e9d02473bfdb3672d6b8a39de2fbc0
+class ComposerAutoloaderInit125dddd280a32cf75b181166154246ec
 {
     private static $loader;
 
@@ -19,15 +19,15 @@ class ComposerAutoloaderInit38e9d02473bfdb3672d6b8a39de2fbc0
             return self::$loader;
         }
 
-        spl_autoload_register(array('ComposerAutoloaderInit38e9d02473bfdb3672d6b8a39de2fbc0', 'loadClassLoader'), true, true);
+        spl_autoload_register(array('ComposerAutoloaderInit125dddd280a32cf75b181166154246ec', 'loadClassLoader'), true, true);
         self::$loader = $loader = new \Composer\Autoload\ClassLoader();
-        spl_autoload_unregister(array('ComposerAutoloaderInit38e9d02473bfdb3672d6b8a39de2fbc0', 'loadClassLoader'));
+        spl_autoload_unregister(array('ComposerAutoloaderInit125dddd280a32cf75b181166154246ec', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION');
         if ($useStaticLoader) {
             require_once __DIR__ . '/autoload_static.php';
 
-            call_user_func(\Composer\Autoload\ComposerStaticInit38e9d02473bfdb3672d6b8a39de2fbc0::getInitializer($loader));
+            call_user_func(\Composer\Autoload\ComposerStaticInit125dddd280a32cf75b181166154246ec::getInitializer($loader));
         } else {
             $map = require __DIR__ . '/autoload_namespaces.php';
             foreach ($map as $namespace => $path) {
diff --git a/dist/backend-libs/composer/autoload_static.php b/dist/backend-libs/composer/autoload_static.php
index 9d05b71..efb5ede 100644
--- a/dist/backend-libs/composer/autoload_static.php
+++ b/dist/backend-libs/composer/autoload_static.php
@@ -4,7 +4,7 @@
 
 namespace Composer\Autoload;
 
-class ComposerStaticInit38e9d02473bfdb3672d6b8a39de2fbc0
+class ComposerStaticInit125dddd280a32cf75b181166154246ec
 {
     public static $prefixesPsr0 = array (
         'P' => 
@@ -19,7 +19,7 @@ class ComposerStaticInit38e9d02473bfdb3672d6b8a39de2fbc0
     public static function getInitializer(ClassLoader $loader)
     {
         return \Closure::bind(function () use ($loader) {
-            $loader->prefixesPsr0 = ComposerStaticInit38e9d02473bfdb3672d6b8a39de2fbc0::$prefixesPsr0;
+            $loader->prefixesPsr0 = ComposerStaticInit125dddd280a32cf75b181166154246ec::$prefixesPsr0;
 
         }, null, ClassLoader::class);
     }
diff --git a/readme.md b/readme.md
index f045ed7..6b7a474 100644
--- a/readme.md
+++ b/readme.md
@@ -38,33 +38,41 @@ This is **alpha-tested** software, do not use it in production yes, it may lose
 
 ## Build it yourself
 Instead of using the files in the `dist` directory you can also build it yourself. You must have [npm](https://docs.npmjs.com/cli/install) and [composer](https://getcomposer.org/download/) installed.
+The files are written to the `dist` directory. See also `build.sh`.
+
 
 Install php dependecies:
 
     composer install
 
+Copy backend files:
+
+    cp -rv src/{backend.php,config.sample.php} dist/
+
 Install javascript dependencies:
 
     npm install
 
 Build frontend:
 
-    gulp build
+    npm run build
+    
+Run frontend with development server: 
+
+    npm start
 
-The files are written to the `dist` directory. See also `build.sh`.
 
 There is a [Vagrantfile](Vagrantfile), in case you are familiar  with [vagrant](https://www.vagrantup.com/).
 
 ## TODO
- 1. reduce total dist size (<1 MB)
  1. setup a link redirection provider (to keep the existence of your installation secret)
- 1. maybe make mails collapsible
- 1. provide error message if config.php is missing or in a public folder. 
+ 2. provide error message if config.php is missing or in a public folder. 
  
 ## Credit
 
 This could not be possible without...
 
  * http://angularjs.org/
- * https://github.com/SchweizerischeBundesbahnen/esta-webjs
  * https://github.com/barbushin/php-imap
+ * https://github.com/gregjacobs/Autolinker.js/
+ * https://github.com/TomFrost/node-phonetic
\ No newline at end of file