Write tags at the bottom of the post on each build

[senorprogrammer]

Tags get added after the file is generated so they can't be added to a post page when the front-matter is.

Instead, on each -build or -save, loop over the posts, parse the tags and write them to the bottom of the file as links under the user-generated content.

and that's how I met your mother.
<!-- TAGS:START -->
<hr />
[television](./television)
<!-- TAGS:END -->