make ref optional

brianc · brianc · commit 835ca56f866c · 2013-07-15T13:59:14.000-05:00
diff --git a/package.json b/package.json
@@ -19,7 +19,9 @@
   "main": "./lib",
   "dependencies": {
     "generic-pool": "2.0.3",
-    "buffer-writer": "1.0.0",
+    "buffer-writer": "1.0.0"
+  },
+  "optionalDependencies": {
     "ref": "0.1.3"
   },
   "devDependencies": {
