chore(package): update lerna to version 2.0.0-rc.0

Closes #170

https://greenkeeper.io/

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
   "devDependencies": {
     "commitizen": "^2.8.6",
     "cz-lerna-changelog": "^0.3.0",
-    "lerna": "2.0.0-beta.30",
+    "lerna": "2.0.0-rc.0",
     "lerna-semantic-release": "^8.0.2"
   }
 }