Allow lowercase React import and using an object reference

[zachasme]

I have been importing React into a lowercase variable, and also using the harmony transform for using class syntax:

var react = require('react');

class ComponentName {
  render() {
    ...
  }
}

module.exports = react.createComponent(ComponentName.prototype);

both of which caused the HMR to not work. This commit allows both of these things to also work.

[gaearon]

I think using lowercase react is somewhat unusual but I'm not opposed to it.

However the reason I use ({ is to avoid hot loader choking on its own JS files (which have .createClass(something) calls. It's not ideal but we need to find a different workaround for this issue (#17).

[zachasme]

I tried reproducing the problem in #17 by running the hot loader on both js and jsx files.

This did indeed choke on the React.createClass call in makeComponentUpdater.js (though throwing a different runtime error).

I'm going to wrap the call in parentheses in my fork (3c236aa) though there is probably a more elegant solution.

Incredible loader by the way!

[gaearon]

This looks good. Let's have this merged and see if it causes issues for anyone.

[gaearon]

Published to NPM as react-hot-loader@0.4.3