Added a TRADEMARK.txt file to HEAD to explain the trademark in detail.

TRADEMARK.txt

@@ -0,0 +1,34 @@
+------------------------
+Moodle Trademark License
+------------------------
+
+The name Moodle™ is a registered trademark of the Moodle Trust.
+
+A key part of the business model that allows us to produce and 
+distribute Moodle as compltely free open source software is that 
+we restrict the commercial use of the Moodle trademark to those 
+who have contracted to support Moodle development (Moodle Partners).
+
+If you are intending to use the name (and/or logo) to advertise 
+generic Moodle™ services (eg Moodle Hosting, Moodle Support, 
+Moodle Certification, Moodle Training, Moodle Consulting, 
+Moodle Customisation, Moodle Courseware Development, Moodle 
+Theme design, Moodle Integrations, Moodle Installations, etc) 
+or as the name of a software package, then you must seek 
+direct permission in writing from the Moodle Trust via the 
+moodle.com helpdesk, in accordance with normal trademark 
+restrictions.
+
+There are no restrictions on how you use the name in other 
+contexts (for example, if you use Moodle just to provide 
+courses then you can use the name freely to refer to it.) 
+
+If you aren't sure of a particular case, please ask us via 
+http://moodle.com/helpdesk: we'll be happy to either provide 
+you with official permission in writing or help you fix 
+your wording. 
+
+Martin Dougiamas
+Executive Director
+Moodle Trust
+http://moodle.com