Update top-level README

This will be updated after the phylogenetic workflow is complete

README.md

@@ -1,9 +1,3 @@
-# Pathogen Repo Guide
+# Nextstrain repository for rabies virus
 
-This is a Nextstrain pathogen repository guide for setting up a pathogen
-repo to hold the files necessary to run and maintain a Nextstrain pathogen build.
-
-Using this guide will allow you to start with the general repository
-and workflow organization that is expected of a Nextstrain maintained pathogen.
-However, the workflows will require customizations to support your specific pathogen
-and should not be expected to "just work".
+This repo is under development.