chore(package): update remark-cli to version 6.0.0

Author: greenkeeper[bot]

package.json

@@ -44,7 +44,7 @@
     "istanbul": "^0.4.4",
     "remark-attr": "^0.6.2",
     "remark": "^9.0.0",
-    "remark-cli": "^5.0.0",
+    "remark-cli": "^6.0.0",
     "remark-comment-config": "^5.0.0",
     "remark-github": "^7.0.0",
     "remark-preset-lint-consistent": "^2.0.0",