v2.0.2 doesn't install graphql as peer dependency

[josgraha]

v2.0.1 did not install graphql dependency in node_modules if already a peer

install v2.0.2 will get the following error if graphql peer already installed
{"errors":[{"message":"Schema must be an instance of GraphQLSchema. Also ensure that there are not multiple versions of GraphQL installed in your node_modules directory."}]}