1.3.3 breaks everything browserify-related
You used to be able to do:

```
var ColorPicker = require('react-color');
```

as in the Readme

Now you have to do:

```
var ColorPicker = require('react-color').ColorPicker;
```

Since exports.default is not supported.

Could you perhaps bump to version 2.0 since it has significant changes to usage for browserify at least?
