Merge pull request #109 from Automattic/other/readme-wiki-update

updated README to point to new wiki section

README.md

@@ -2,19 +2,7 @@
 
 WordPress plugin for handling legacy redirects in a scalable manner.
 
-Redirects are stored as a custom post type and use the following fields:
-
-- `post_name` for the md5 hash of the "from" path or URL.
-  - we use this column, since it's indexed and queries are super fast.
-  - we also use an md5 just to simplify the storage.
-- `post_title` to store the non-md5 version of the "from" path.
-- one of either:
-  - `post_parent` if we're redirect to a post; or
-  - `post_excerpt` if we're redirecting to an alternate URL.
-
-For detailed documentation, please see https://wpvip.com/plugins/wpcom-legacy-redirector/
-
-Please contact us before using this plugin.
+Please see our [wiki](https://github.com/Automattic/WPCOM-Legacy-Redirector/wiki) for detailed documentation.
 
 ## Requirements