Update peerDependencies in package.json

[ahaider48]

Upon updating to React 16, and running yarn check I get the following errors:

error "react-notification-system-redux#react@^0.14 || ^15.0.0-rc || ^15.0" doesn't satisfy found match of "react@16.0.0"
error "react-notification-system-redux#react-dom@^0.14 || ^15.0.0-rc || ^15.0" doesn't satisfy found match of "react-dom@16.0.0"

It would be nice if you can include react and react-dom 16 in your package.json peerDependencies as well if possible.

[ahaider48]

This issue has been fixed in https://github.com/gor181/react-notification-system-redux/pull/51

[gor181]

Updated the PR #51 as tests are failing