title: How do I update my react dependencies after upgrading to react v16?
body: <p>After upgrading to react v16, other dependencies are showing warnings when I use yarn:</p>
  
  <pre><code>warning "react-chartjs-2@2.1.0" has incorrect peer dependency "react@^0.14 || ^15.0.0-rc || ^15.0".
  warning "react-chartjs-2@2.1.0" has incorrect peer dependency "react-dom@^0.14 || ^15.0.0-rc || ^15.0".
  warning "react-motion@0.5.0" has incorrect peer dependency "react@^0.14.9 || ^15.3.0".
  warning "react-router@3.0.5" has incorrect peer dependency "react@^0.14.0 || ^15.0.0".
  warning "react-router-dom@4.1.2" has incorrect peer dependency "react@^15".
  warning "react-router@4.1.2" has incorrect peer dependency "react@^15".
  warning "react-scrollchor@4.0.0" has unmet peer dependency "fbjs@*".
  warning "react-sizes@0.1.2" has incorrect peer dependency "react@^15.6.1".
  warning "react-sizes@0.1.2" has incorrect peer dependency "react-dom@^15.6.1".
  warning "react-addons-test-utils@15.6.2" has incorrect peer dependency "react-dom@^15.4.2".
  </code></pre>
  
  <p>How do I update these components? Do I have to manually use yarn to add the latest version for each one? Will that fix this? BTW, these warnings apparently have no effect on my app, it still compiles and runs.</p>