The basic valid structure of the definition.xml file is as following:

<?xml version="1.0" encoding="utf-8" ?>
<package xmlns="http://css-javascript-toolbox/xml/namespaces/cjt/6/package">
   <name>PACKAGE_NAME</name>
   <description>DESCRIPTION</description>
   <author>AUTHOR_NAME</author>
   <webSite>PACKAGE_WEBSITE</webSite>
   <license>RAW_LICENSE or LICENSE_FILE</license>
   <readme>RAW_README or README_FILE</readme>
   <objects>
      OBJECT LIST GOES HERE ...
      AT LEAST ONE BLOCK OBJECT SHOULD BE PRESENETED
      ....
      ....
      .... 
      ....
   </objects>
</package>