Merge branch 'b5' into masterdev
remove gitignore
Committing vendor directory and other composer files
Add dependency folders missed from alst commit
Remove parse.php and the plugin.
Merge branch 'masterdev' of github.com:paulgibbs/WP-Parser
Move files into parser subdirectory
Remove the Markdown subrepo
Add Markdown to the composer dependencies
Remove other old submodules
Move the vendor directory into the parser directory
Readd dependencies from composer

Run `composer install` to update these on your local copy.
Add the WP CLI command

Thanks to @paulgibbs for this. Originally from
https://github.com/Automattic/WP-CLI-PHPDoc/blob/master/phpdoc.php