chore: does master build?

[ilikejames]

I'm getting in node@4.9.0 on master locally, and a similar failure on PR-110.

npm ERR! ENOTDIR: not a directory, open '*/router/node_modules/eslint-plugin-markdown/node_modules/mdast-util-from-markdown/node_modules/@types/mdast/package.json'

Adding this PR as a test as a check if master builds correctly.

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Edit: This on a clean environment with rm -rf node_modules and npm cache clean

[ilikejames]

Ok, it does.