Fix header

Bump to 0.4.0, document new filter, update README.md

Merge pull request #10 from Mte90/master

little fix

fix https://github.com/WebDevStudios/WDS-Log-Post/issues/9

Would help to use the right field name

Update to generate unique slugs

Merge pull request #7 from WebDevStudios/required_term_filter

Update some of the docbloks

Add a docblock to the filter

Update the version number

Add a filter to determine if terms are required to be pre-defined

Add a filter for the taxonomy registration

Fix some logic and bump the version

If get_post returns nothing, we need to insert a new log