chore(prettier): Do not run prettier on node 4

package.json

@@ -7,8 +7,8 @@
     "lint": "check-node-version -q --node '< 6.0' || (echo \"Don't worry, ESLint takes some time ...\" && eslint . ./)",
     "lintFix": "check-node-version -q --node '< 6.0' || (echo \"Don't worry, ESLint takes some time ...\" && eslint --fix . ./)",
     "flow": "flow",
-    "prettier": "node ./scripts/prettier.js write-changed",
-    "prettier-all": "node ./scripts/prettier.js write",
+    "prettier": "check-node-version -q --node '< 6.0' || node ./scripts/prettier.js write-changed",
+    "prettier-all": "check-node-version -q --node '< 6.0' || node ./scripts/prettier.js write",
     "cleanNodeModules": "for dir in `find . -name 'package.json' -print0 | xargs -0 -n1 dirname | sort --unique | grep -v node_modules`; do (cd $dir; pwd; rm -vfr node_modules); done",
     "install": "for dir in `find . -name 'package.json' -print0 | xargs -0 -n1 dirname | sort --unique | grep -v node_modules | grep -v '^.$' | grep -v 'js-given/dist' `; do (cd $dir; pwd; yarn --ignore-engines); done",
     "upgradeExamplesToLatest": "for dir in `find examples -name 'package.json' -print0 | xargs -0 -n1 dirname | sort --unique | grep -v node_modules`; do (cd $dir; pwd; yarn upgrade js-given@latest); done",