Update np package

Author: bkrem

package.json

@@ -94,7 +94,7 @@
     "jest": "^21.2.1",
     "jsdoc-to-markdown": "^3.0.0",
     "lint-staged": "^6.0.0",
-    "np": "^2.16.0",
+    "np": "^2.18.3",
     "postcss-loader": "^2.0.9",
     "prettier": "^1.6.1",
     "react": "^16.1.1",