Adding README entry

Dieterich Lawson · Dieterich Lawson · commit 5f00a2bd990f · 2018-09-07T12:28:20.000-04:00
diff --git a/research/README.md b/research/README.md
@@ -29,6 +29,8 @@ request.
 -   [differential_privacy](differential_privacy): differential privacy for training
     data.
 -   [domain_adaptation](domain_adaptation): domain separation networks.
+-   [fivo](fivo): filtering variational objectives for training generative
+    sequence models.
 -   [gan](gan): generative adversarial networks.
 -   [im2txt](im2txt): image-to-text neural network for image captioning.
 -   [inception](inception): deep convolutional networks for computer vision.
