Added some todo's
Implemented autoloading and some small bug fixes

* Enhancement: implemented spl_autoload for loading of class files
* Fix: always set version number to current on option save
* Fix: html error where div was not closed
* Fix: use admin_url() to generate admin links
* Fix: removed redundant static property $url in favor of always using plugins_url() so the hooks within plugins_url() don't break
* Fix: moved filter_statics() call to above loading of text domain to make sure textdomain is getting the right info