Mark repo as deprecated, refer to doca.

This project has now been closed down in favor of its replacement, Doca.

Author: handrews

README.md

@@ -0,0 +1,14 @@
+DEPRECATED
+==========
+
+Please take a look at **[Doca](https://github.com/cloudflare/doca)**, our new,
+improved, and actively supported JSON Schema documentation system.
+
+The last known good release of this project is tagged as
+[v2.1.2](https://github.com/cloudflare/json-schema-docs-generator/tree/v2.1.2)
+
+A few additional pull requests have been merged on master to wrap things
+up here, but the current state of master has not been broadly tested.
+
+For more information on how this project worked, see the
+[old README](https://github.com/cloudflare/json-schema-docs-generator/blob/master/OLD_README.md).