update version to 0.5.1-rc.1

Author: minhsueh

package.json

@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.4.0-rc.0",
+  "version": "0.5.1-rc.1",
   "description": "",
   "main": "index.js",
   "module": "dist/index.es.js",