Added a TODO to prompt the user to change the plugin-name
removing a redundant comment delimiter
Replace plugin-name with plugin_slug & remove TODO
Add TODO for Plugin_Name::VERSION
loading the admin class only if the dashboard is being loaded

fixes #104
moving all of the admin-specific functionality into the admin subdirectory

related #100
removing files from the main plugin directory in favor of admin and public specific directories

related #100
adding public and admin comments. conditionally loading the admin class.

related #104
moving all public related code to a self-contained subdirectory

related #100
updating a comment
removing files from the plugin root

related #100
updating the change log, moving the previous untagged 2.6.0 notes into the official, forthcoming 2.6.0 tag.