chore(package): update husky to version 2.4.0

Closes #15

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
     "eslint-plugin-import": "^2.13.0",
     "eslint-plugin-prettier": "^2.6.2",
     "greenkeeper-lockfile": "^1.15.1",
-    "husky": "^1.0.0-rc.13",
+    "husky": "^2.4.0",
     "mocha": "^5.2.0",
     "nyc": "^12.0.2",
     "prettier": "^1.13.7",