Use a different index for pages saved in local development
Be explicit about which post_status states to save - publish only

Any other post status should likely not be saved in search. At some
point we'll want to ensure that documents are deleted from search if
they move into a draft, private, or trashed status.
Start storing hostname as a search field

This will allow for domain specific searches
Also store the site_url - hostname + path for site specific search
Sanitize Elasticsearch ID with preg_replace rather than sanitize_key

sanitize_key() uses strtolower() and our ES IDs are mixed case.
Capture the last modified date when a post is updated
Store a page's post type
Map each registered taxonomy to the Elasticsearch document
Use transition_post_status rather than save_post for main hook

This lets us distinguish the new status of `publish` immediately
Update docblock
Add handling for document deletion when post status is not publish
Update README to include the document structure
Network ID should be an integer
Merge pull request #1 from washingtonstateuniversity/update

[PR] Add next set of enhancements to WSU Search