Default to run action

byg/app/Main.hs

@@ -17,7 +17,7 @@ main :: IO ()
 main = do
   args <- getArgs
   case args of
-    ["run"] -> do
+    [] -> do
       ((), filesWritten) <- DR.runDepRunMIO $ DR.runDeps dependencies
       putStrLn ("Files which could have been written: " ++ show filesWritten)
     ["tree"] ->