Introduce partner and funder logos

Change-Id: I71e00aaa51c2dffe74335c7c4f170e8d507356d6
diff --git a/examples/ids.Rmd b/examples/ids.Rmd
index 9114e18..d657904 100644
--- a/examples/ids.Rmd
+++ b/examples/ids.Rmd
@@ -6,6 +6,9 @@
   - name: John Doe
 institute: "IDS Mannheim"
 date: "`r paste0('Mannheim, ', Sys.Date())`"
+website: "https://korap.ids-mannheim.de/gerrit/IDS-Mannheim/revealjs"
+partner_logo: "logos/clarin-logo.svg"
+funder_logo: "logos/text-plus-logo.svg"
 output: 
   revealjs.ids::revealjs_presentation:
     reveal_plugins: