Use ES6 class style for creating react components

[Holi0317]

No description provided.

[MichaelDeBoey]

This should be in your global .gitignore file on your working machine

[Holi0317]

Sorry for forgetting to keep track of this PR ;P

[nkbt]

Great work! Thank heaps.

I though first that we might need to change our peer dependencies

"peerDependencies": {
  "react": ">=0.13.2 || ^0.14 || ^15.0.0"		     
}

But it looks like React.Component was introduced in 0.13.0, so we are still OK.

That means we don't need to release major version with this change.

[MichaelDeBoey]

@nkbt The prop-types package is only compatible with React ^0.14.9 or React ^15.3.0

[nkbt]

Ouch. Thanks for that @MichaelDeBoey

[MichaelDeBoey]

@nkbt Will be fixed with #458

[nkbt]

I will publish 0.5.0 (sort of "major" in 0.x way) then, after #457 is merged (tomorrow, since I left my laptop in the office)

[nkbt]

Just published 0.5.0 🤞

Notes
https://github.com/chenglou/react-motion/releases/tag/v0.5.0