Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/describe.py b/describe.py
index 3aaaa50..e5203d8 100755
--- a/describe.py
+++ b/describe.py
@@ -335,7 +335,8 @@
   for name in dir(resource):
     if (not name.startswith('_')
         and callable(getattr(resource, name))
-        and hasattr(getattr(resource, name), '__is_resource__')):
+        and hasattr(getattr(resource, name), '__is_resource__')
+        and discovery != {}):
       dname = name.rsplit('_')[0]
       collection = getattr(resource, name)()
       document_collection_recursive(collection, path + name + '.', root_discovery,