update description of combined

diff --git a/dygraph-combined.js b/dygraph-combined.js
index f5bd176..d051df1 100644 (file)
--- a/dygraph-combined.js
+++ b/dygraph-combined.js
@@ -1 +1,7 @@
-This is not the file you are looking for. You want http://danvk.org/dygraphs/dygraph-combined.js
+This is not the file you are looking for.
+A reasonably up-to-date version can be found at http://danvk.org/dygraphs/dygraph-combined.js
+
+dygraph-combined.js is a "packed" version of the larger dygraphs JS files. It is
+smaller and loads more quickly, but is harder to debug.
+
+To generate this file, run "make" or generate-combined.sh.