Add logo

README.md

@@ -1,5 +1,11 @@
 <!-- Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. -->
 
+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://assets.vespa.ai/logos/Vespa-logo-green-RGB.svg">
+  <source media="(prefers-color-scheme: light)" srcset="https://assets.vespa.ai/logos/Vespa-logo-dark-RGB.svg">
+  <img alt="#Vespa" width="200" src="https://assets.vespa.ai/logos/Vespa-logo-dark-RGB.svg" style="margin-bottom: 25px;">
+</picture>
+
 # CORD-19 Search
 This application serves data from [COVID-19 Open Research Dataset (CORD-19)](https://allenai.org/data/cord-19) dataset.