experimental
removed all microformats stuff

the plugin should only implement the spec stuff
removed post type
Merge branch 'experimental' of https://github.com/pfefferle/wordpress-webmention into experimental

Conflicts:
	webmention.php
WordPress like readme
complete refactoring
added functionality to save a webmention as comment
some cosmetics
some nicer hooks
some typos

props to @acegiak
some more readme text