Move mousetrap to dev dependencies

Author: adamwathan

package.json

@@ -38,14 +38,14 @@
     "eslint-config-prettier": "^2.7.0",
     "eslint-plugin-prettier": "^2.3.1",
     "jest": "^20.0.4",
+    "mousetrap": "^1.6.1",
     "prettier": "^1.7.4",
     "rimraf": "^2.6.1"
   },
   "dependencies": {
     "commander": "^2.11.0",
     "fs-extra": "^4.0.2",
     "lodash": "^4.17.4",
-    "mousetrap": "^1.6.1",
     "nodemon": "^1.11.0",
     "postcss": "^6.0.9",
     "postcss-functions": "^3.0.0",