Fix ts-node running on composite projects

[sgoll]

See #656 for details.

[coveralls]

Coverage increased (+0.3%) to 85.101% when pulling a6a3020 on sgoll:master into 2017b3a on TypeStrong:master.

[coveralls]

Coverage increased (+0.3%) to 85.101% when pulling a6a3020 on sgoll:master into 2017b3a on TypeStrong:master.

[blakeembrey]

Thanks! 👍

[dotbear]

Any chance of this getting released anytime soon? :)

[sgoll]

I'd also like a quick patch release for this since it's somewhat disruptive to my workflow and patching ts-node inline after every npm/yarn install is only fun for so long before it becomes tedious. :)