Added 'e107_docs\doxygen' folder which will contain standalone doxygen docs that aren't specific to any one e107 file

Added 'main_page.php' which contains the text which is displayed on the main page of the documentation that doxygen creates. Right now it contains the same information that's found in the current 'README.md'

e107_docs/doxygen/main_page.php

@@ -0,0 +1,32 @@
+<?php
+
+/*! \mainpage e107 Content Management System (CMS) - v2
+ *
+ * \section intro_sec What is e107?
+ *
+ * e107 is a free (open-source) content management system which allows you to easily manage and publish your content online. Developers can save time in building websites and powerful online applications. Users can avoid programming completely! Blogs, Websites, Intranets - e107 does it all.
+ *
+ * \section requirements_sec Requirements
+ * 
+ * - PHP v5.3 or higher
+ * - MySQL 4.x or higher 
+ * 
+ * \section install_sec Installation
+ * 
+ * - Point your browser to the http://localhost/YOUR FOLDER/install.php (depending on your webserver setup)
+ * - Follow the installation wizard
+ *
+ * \section reporting_bugs_sec Reporting Bugs
+ * 
+ * Be sure you are using the most recent version prior to reporting an issue. You may report any bugs or feature requests on GitHub (https://github.com/e107inc/e107/issues)
+ * 
+ * \section pull_requests_sec Pull-Requests
+ * 
+ * - Please submit 1 pull-request for each Github #issue you may work on. 
+ * - Make sure that only the lines you have changed actually show up in a file-comparison (diff) ie. some text-editors alter every line so this should be avoided.
+ * 
+ * \section license_sec License
+ *  
+ * e107 is released under the terms and conditions of the GNU General Public License (http://www.gnu.org/licenses/gpl.txt)
+ * 
+ */