Move redirection logic out of render

[yangmillstheory]

https://github.com/learnapollo/learnapollo/issues/51

• https://facebook.github.io/react/docs/react-component.html#render
• https://facebook.github.io/react/docs/react-component.html#componentwillreceiveprops
• http://stackoverflow.com/a/33115147/2419669

Should there be another change to the update the tutorial copy?

[marktani]

Amazing, thanks!

Should there be another change to the update the tutorial copy?

Yes, a analogous PR here with the updated code would be great :slightly_smiling_face: Then I'll merge both of them in

[yangmillstheory]

https://github.com/learnapollo/learnapollo/pull/52