Updated sample YAML description

samples/angular-aad-webapi/README.md

@@ -1,3 +1,20 @@
+---
+page_type: sample
+products:
+- office-365
+- office-sp
+languages:
+- javascript
+- typescript
+extensions:
+  contentType: samples
+  technologies:
+  - SharePoint Framework
+  - Azure AD
+  platforms:
+  - AngularJs
+  createdDate: 1/1/2016 12:00:00 AM
+---
 # Call custom Web API secured with AAD from SharePoint Framework client-side web part using Angular v1.x
 
 ## Summary