Issue #56: missing minimal configuration for Zend\Db

doc/book/getting-started/skeleton-application.md

@@ -118,6 +118,19 @@ prompts that you may not want to enable by default is `Zend\Test`.)
 Once the installation is done, the skeleton installer removes itself, and the
 new application is ready to start!
 
+### Small DB configuration
+
+When you have chosen "y" for database support with 'Zend\Db', you need to create a minimal database configuration in `config/autoload/global.php`. In [Database and models](/tutorials/getting-started/database-and-models) chapter we will explain more about this configuration, but for now it's enough to just add the following.
+
+```php
+return [
+    'db' => [
+        'driver' => 'Pdo',
+        'dsn' => 'sqlite::memory:',
+    ],
+];
+```
+
 > ### Downloading the skeleton
 >
 > Another way to install the ZendSkeletonApplication is to use github to