Include pure-render-decorator

[marcusvmsa]

Including pure render decorator as proposed in #141 and organizing imports.

[marcusvmsa]

This fixes a warning from React 0.14

[justin808]

@MaMute This looks quite good!

@alexfedoseev Please take a peek at this! Will this break with Babel 6? @MaMute would you mind trying Babel 6. Supposedly, they just fixed some things that are critical to make this work. @alexfedoseev can tell you more.

[alex35mil]

Yesterday we discussed it and decided to stick with this solution for now, until decorators spec will be on stage 0 at least. @MaMute will update this PR.

[marcusvmsa]

@justin808 @alexfedoseev this is ready

[alex35mil]

@MaMute The idea is to create a parent Component with shouldComponentUpdate method:

/* Component.jsx */

class Component extends React.Component {
  shouldComponentUpdate() {
    return React.addons.PureRenderMixin.shouldComponentUpdate.apply(this, arguments);
  }
}

And then:

import Component from './Component';

export default class EachComponentInApp extends Component {

  // using `shouldComponentUpdate` from Component here...

}

[marcusvmsa]

@alexfedoseev Done 👍

[alex35mil]

@MaMute Looks good 👍 One thing: let's place it in client/app/libs/components so it will be shared among all bundles.

[marcusvmsa]

@alexfedoseev done 👍

[justin808]

@MaMute This is awesome. One last question. Is there any way we can have a test or something that confirms we're getting some benefit from this change?