npm test envify error

[danielsiwiec]

Summary:

Running npm test gives an error:

ERROR [karma]: Error: Cannot find module 'envify' from '/Users/dsiwiec/workspace/private/js/react/react-modal'

Steps to reproduce:

1. Clone the react-modal repo
2. npm install
3. npm test

Expected behavior:

Tests should run and succeed.

Additional notes:

npm -v
3.8.9

node -v
v6.2.0