fix(package): update remark-toc to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
     "read-pkg-up": "^3.0.0",
     "remark": "^8.0.0",
     "remark-html": "7.0.0",
-    "remark-toc": "^4.0.0",
+    "remark-toc": "^5.0.0",
     "remote-origin-url": "0.4.0",
     "shelljs": "^0.7.5",
     "stream-array": "^1.1.0",