improve breadcrumbs

breadcrumb/toc.yml

@@ -1,3 +1,34 @@
-- name: Azure Libraries for Java
-  href: /java/api
-  homepage: /java/api
+- name: Azure
+  tochref: /azure/
+  topichref: /azure/index
+  items:
+  - name: Azure Libraries for Java
+    tochref: /java/azure/index
+    topichref: /java/azure/index
+    items:
+    - name: Install
+      tochref: /java/azure/java-azure-sdk-install
+      topichref: /java/azure/java-azure-sdk-install
+    - name: Get started
+      tochref: /java/azure/java-sdk-azure-get-started
+      topichref: /java/azure/java-sdk-azure-get-started
+    - name: Key concepts
+      tochref: /java/azure/java-sdk-azure-concepts
+      topichref: /java/azure/java-sdk-azure-concepts
+    - name: Authentication
+      tochref: /java/azure/java-sdk-azure-authenticate
+      topichref: /java/azure/java-sdk-azure-authenticate
+    - name: Release notes
+      tochref: /java/azure/java-sdk-azure-release-notes
+      topichref: /java/azure/java-sdk-azure-release-notes
+  - name: Sample code
+    items:
+      - name: Virtual machines
+        tochref: /java/azure/java-sdk-azure-virtual-machine-samples
+        topichref: /java/azure/java-sdk-azure-virtual-machine-samples
+      - name: Web apps
+        tochref: /java/azure/java-sdk-azure-web-apps-samples
+        topichref: /java/azure/java-sdk-azure-web-apps-samples
+      - name: SQL Database
+        href: /java/azure/java-sdk-azure-sql-database-samples
+        topichref: /java/azure/java-sdk-azure-sql-database-samples