minor #7658 Added a note about the .htaccess files included by Symfony apps (javiereguiluz)

This PR was squashed before being merged into the 2.7 branch (closes #7658).

Discussion
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Added a note about the .htaccess files included by Symfony apps

This fixes #7625.

Commits
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60658aa Added a note about the .htaccess files included by Symfony apps

Author: xabbuh

setup/web_server_configuration.rst

@@ -306,7 +306,7 @@ The **minimum configuration** to get your application running under Nginx is:
             # Remove the internal directive to allow URIs like this
             internal;
         }
-        
+
         # return 404 for all other php files not matching the front controller
         # this prevents access to other php files you don't want to be accessible.
         location ~ \.php$ {
@@ -336,6 +336,13 @@ The **minimum configuration** to get your application running under Nginx is:
     or ``config.php`` scripts (i.e. ``http://example.com/app_dev.php`` and ``http://example.com/config.php``).
     If you *can* access these, be sure to remove the ``DEV`` section from the above configuration.
 
+.. note::
+
+    By default, Symfony applications include several ``.htaccess`` files to
+    configure redirections and to prevent unauthorized access to some sensitive
+    directories. Those files are only useful when using Apache, so you can
+    safely remove them when using Nginx.
+
 For advanced Nginx configuration options, read the official `Nginx documentation`_.
 
 .. _`Apache documentation`: http://httpd.apache.org/docs/