Merge pull request #1629 from ProjectMirador/netlify-redirect

Add a configuration file for Netlify to redirect to our integration…

netlify.toml

+# This is the configuration file for the netlify preview deploys
+# See https://www.netlify.com/docs/netlify-toml-reference/ for more
+
+[[redirects]]
+  from = "/"
+  to = "/__tests__/integration/mirador/"