fix: for babel6

Author: akameco

package.json

@@ -36,7 +36,7 @@
     "messages"
   ],
   "dependencies": {
-    "extract-react-intl": "^0.9.0",
+    "extract-react-intl": "0.7.1",
     "flat": "^4.1.0",
     "js-yaml": "^3.12.1",
     "load-json-file": "^5.1.0",
@@ -49,6 +49,7 @@
   "devDependencies": {
     "all-contributors-cli": "^5.10.2",
     "ava": "^1.1.0",
+    "babel-core": "^6.26.3",
     "husky": "^1.3.1",
     "lint-staged": "^8.1.0",
     "pify": "^4.0.1",