React-color 2.17 is breaking
I'm using storybook addon-knobs, it uses react-color as a dependency, and it has an error in it's story files, I guess it tries to find the .storybook directory which is missing, I tried uninstalling knobs and only installing react-color, it still breaks the build with the same error.

```
ERROR in ./node_modules/react-color/lib/components/swatches/story.js
Module not found: Error: Can't resolve '../../../.storybook/report' in '/Users/lna11126/Desktop/my-app/node_modules/react-color/lib/components/swatches'
 @ ./node_modules/react-color/lib/components/swatches/story.js 9:14-51
 @ . sync .story\.jsx?$
 @ ./.storybook/config.js
 @ multi ./node_modules/@storybook/core/dist/server/common/polyfills.js ./node_modules/@storybook/core/dist/server/preview/globals.js ./.storybook/config.js (webpack)-hot-middleware/client.js?reload=true
```
This is the file: `react-color/lib/components/swatches/story.js`

<img width="1093" alt="Screen Shot 2019-03-28 at 22 21 47" src="https://user-images.githubusercontent.com/18119833/55190564-b1bfbf80-51a8-11e9-8bbe-b17d355f05c5.png">
