Merge pull request #10 from nextstrain/add_root

add: color invariant regions to match the live build

Author: Jennifer Chang

Snakefile

@@ -203,6 +203,7 @@ rule export:
             --colors {input.colors} \
             --lat-longs {input.lat_longs} \
             --auspice-config {input.auspice_config} \
+            --include-root-sequence \
             --output {output.auspice_json}
         """