Recognise rebar templater's list format

src/couch_log.app.src.script

diff --git a/src/couch_log.app.src.script b/src/couch_log.app.src.script
index 8fd7b02..49551c4 100644
--- a/src/couch_log.app.src.script
+++ b/src/couch_log.app.src.script
@@ -26,6 +26,8 @@
 end.
 
 BackendApps = case lists:keyfind(couch_log_backend_apps, 1, CouchConfig) of
+    {couch_log_backend_apps, {list, Apps}} ->
+        Apps;
     {couch_log_backend_apps, Apps} ->
         Apps;
     false ->