Match more than zero tests when 'npm test' run in root directory.
Match more than zero tests when 'npm test' run in root directory.

This is a cherry-pick of my previous commit
73790bd64c02011538a2d4257177a7c43b8c8269, which seems to have gotten lost
in the shuffle.

@hwillson was there some reason you needed to remove this option (in
ad15e43bcb8d1b5664f879c6404a918bc4f9ae62)?

apollostack/react-apollo,apollographql/react-apollo,apollostack/react-apollo,apollographql/react-apollo