Add dependency on reducers.

package.json

@@ -14,6 +14,9 @@
   "bugs": {
     "url": "http://github.com/Gozala/repipe/issues/"
   },
+  "dependencies": {
+    "reducers": ">=0.0.3"
+  },
   "devDependencies": {
     "test": ">=0.4.4",
     "repl-utils": ">=1.0.0"