- switching to init from plugins_loaded

Loading on plugins_loaded causes an error for register_taxonomy with add_rewrite tag. Changing to init drops the error and brings register_taxonomy usage inline with documentation.

Changing register_post_type brings it in line with register_taxonomy
Merge pull request #7 from curtismchale/bug/rewrite-tag

add_rewrite_tag error on register_taxonomy
Add pruning to WP_Logging

WP_Logging would now provide a hook to hit with wp-cron so that you could prune old logs.

By default you'd need to set up the cron job and specifically filter the `$should_we_prune` variable (making it true) to make the prune process run.

The default settings are to prune all logs that are 2 weeks old or older and force delete them so that they bypass the WordPress trash.
Merge pull request #8 from curtismchale/patch-2

Add pruning to WP_Logging
Added documentation on log pruning

This provides information on how to prune logs and all the new available filters.
Merge pull request #9 from curtismchale/patch-3

Added documentation on log pruning