Changed version back to "0.4.21" on release-0.4.x and added publishConfig

Author: patrick-steele-idem

package.json

@@ -5,7 +5,7 @@
         "email": "subbu@ebaysf.com"
     }],
     "name": "cluster2",
-    "version": "0.5.0-SNAPSHOT",
+    "version": "0.4.21",
     "repository": {
         "type": "git",
         "url": "https://github.com/ql-io/cluster2"
@@ -34,5 +34,8 @@
     "scripts": {
         "test": "nodeunit test"
     },
-    "optionalDependencies": {}
+    "optionalDependencies": {},
+    "publishConfig": {
+        "registry": "http://registry.npmjs.org/"
+    }
 }