babel: command not found

[JakeHartnell]

npm install graphql-directive-computed-property fails. : /

To reproduce:

mkdir babelNotfound
npm install graphql-directive-computed-property

Babel is in devDependencies, but it's actually required to build this package. Not every project has Babel as a dependency, so the options are:

1. Include it as a regular dependency. : /
2. For distribution to npm include the build.

See: https://github.com/bookercodes/articles/blob/master/how-to-build-and-publish-es6-npm-modules-today-with-babel.md

[czystyl]

@JakeHartnell definitely it should be bundled before release so I'll try to do or if you want PR is welcome :)