diff -r 07239de796bb -r e756a8c72c3d cms/drupal/sites/all/themes/README.txt
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/sites/all/themes/README.txt	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,29 @@
+Themes allow you to change the look and feel of your Drupal site. You can use
+themes contributed by others or create your own.
+
+WHAT TO PLACE IN THIS DIRECTORY?
+--------------------------------
+
+Placing downloaded and custom themes in this directory separates downloaded and
+custom themes from Drupal core's themes. This allows Drupal core to be updated
+without overwriting these files.
+
+DOWNLOAD ADDITIONAL THEMES
+--------------------------
+
+Contributed themes from the Drupal community may be downloaded at
+https://www.drupal.org/project/project_theme.
+
+MULTISITE CONFIGURATION
+-----------------------
+
+In multisite configurations, themes found in this directory are available to
+all sites. Alternatively, the sites/your_site_name/themes directory pattern
+may be used to restrict themes to a specific site instance.
+
+MORE INFORMATION
+-----------------
+
+Refer to the "Appearance" section of the README.txt in the Drupal root directory
+for further information on customizing the appearance of Drupal with custom
+themes.