3.0-rc1 missing dep

[mafintosh]

Get this error when requiring the latest rc

> require('readable-stream')
Error: Cannot find module 'babel-runtime/core-js/symbol'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:581:15)
    at Function.Module._load (internal/modules/cjs/loader.js:507:25)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at _load_symbol (/tmp/tmpdir/CoaDof/node_modules/readable-stream/lib/_stream_readable.js:29:43)

[phated]

I've also commented at #344 (comment)

[mcollina]

@phated @mafintosh this should be fixed in 3.0.0-rc.2.