chore(package): add 'test' task

Author: matteocng

package.json

@@ -29,7 +29,8 @@
     "lint:js": "eslint src webpack cmrh.conf.js",
     "lint:css": "sass-lint 'src/**/*.scss' -v -q",
     "lint:fix": "eslint src webpack --fix",
-    "pre-commit": "npm run lint && npm run flow"
+    "pre-commit": "npm run test",
+    "test": "npm run lint:js && npm run lint:css && npm run flow"
   },
   "pre-commit": "pre-commit",
   "dependencies": {