build: perf script for changelog

Author: Scrum

package.json

@@ -18,7 +18,7 @@
     "node": ">=8"
   },
   "scripts": {
-    "version": "conventional-changelog -i changelog.md -s -r 0 && git commit -am \"build: update changelog\"",
+    "version": "conventional-changelog -i changelog.md -s -r 0 && git add changelog.md && git commit -m \"build: update changelog\"",
     "prepare": "npm run build",
     "build": "rimraf lib && babel src -d lib",
     "coverage": "nyc report --reporter=text-lcov | coveralls",