peerDependencies Issue in React 0.14
The `react-addons-shallow-compare` dependency version specified at `^15.0.0` [here](https://github.com/casesandberg/react-color/blob/master/package.json#L43) isn't compatible with React v0.14, since it has React v15 as a peerDependency. Using this library with React v0.14 causes NPM to show a peerDependencies error because of this.

 If I change that line to `^15.0.0 || ^0.14.0` I can at least specify `"react-addons-shallow-compare": "^0.14.0"` in my own project's package.json file to prevent that error.
