New navigation for 1.10

Capturing Olivier's comments

Signed-off-by: Mary Anthony <mary@docker.com>

docs/spec/auth/index.md

@@ -1,10 +1,8 @@
 <!--[metadata]>
 +++
-title = "Docker Regidtry Token Authentication"
+title = "Docker Registry Token Authentication"
 description = "Docker Registry v2 authentication schema"
 keywords = ["registry, on-prem, images, tags, repository, distribution, authentication, advanced"]
-[menu.main]
-parent="smn_registry_ref"
 +++
 <![end-metadata]-->
 

docs/spec/index.md

@@ -0,0 +1,18 @@
+<!--[metadata]>
++++
+title = "Reference"
+description = "Explains registry JSON objects"
+keywords = ["registry, service, images, repository,  json"]
+[menu.main]
+identifier="smn_registry_ref"
+parent="smn_registry"
+weight=7
++++
+<![end-metadata]-->
+
+# Docker Registry Reference
+
+* [HTTP API V2](api.md)
+* [Storage Driver](../storagedrivers.md)
+* [Token Authentication Specification](auth/token.md)
+* [Token Authentication Implementation](auth/jwt.md)