Updated TOC to include new guidance node for web parts

Author: VesaJuvonen

misc/SharePointDocumentationToc.xml

@@ -24,6 +24,11 @@
 				<Item text="Notes on solution packaging" url="spfx/web-parts/basics/notes-on-solution-packaging" SEODescription="Understand definition details for files used for packaging web parts in solutions in the SharePoint Framework" />
 				<Item text="Known issues" url="spfx/web-parts/basics/known-issues" SEODescription="Known issues with web parts in the SharePoint Framework" />
 			</Item>
+			<Item text="Guidance" url="spfx/web-parts/guidance" SEODescription="" >
+				<Item text="Use existing JavaScript libraries in SharePoint Framework client-side web parts" url="spfx/web-parts/guidance/use-existing-javascript-libraries" SEODescription="Use external JavaScript libraries in your client-side web parts." />
+				<Item text="Build SharePoint Framework client-side web parts with Angular v1.x" url="spfx/web-parts/guidance/build-client-side-web-parts-with-angular-1-x" SEODescription="Use Angular 1.x in your SharePoint Framework client-side web parts." />
+				<Item text="Call the Microsoft Graph API using OAuth from your web part" url="spfx/web-parts/guidance/connect-client-side-web-parts-to-aad-secured-resources" SEODescription="Connect your SharePoint Framework client-side web parts to Microsoft Graph API." />
+			</Item>
 		</Item>
 	</Item>
 	<Item text="SharePoint APIs" url="apis" SEODescription="">