#209663 by Matt V., ScoutBaker, Arancaytar: document that the modules and...

#209663 by Matt V., ScoutBaker, Arancaytar: document that the modules and themes folders are only for core modules and themes

modules/README.txt

+This directory is reserved for core module files. Custom or contributed
+modules should be placed in their own subdirectory of the sites/all/modules
+directory. For multisite installations, they can also be placed in a subdirectory
+under /sites/{sitename}/modules/, where sitename is the name of your site
+(e.g., www.example.com). This will allow you to more easily update Drupal core files.
+
+For more details, see: http://drupal.org/node/176043
+

themes/README.txt

+This directory is reserved for core theme files. Custom or contributed
+themes should be placed in their own subdirectory of the sites/all/themes
+directory. For multisite installations, they can also be placed in a subdirectory
+under /sites/{sitename}/themes/, where sitename is the name of your site
+(e.g., www.example.com). This will allow you to more easily update Drupal core files.
+
+For more details, see: http://drupal.org/node/176043
+