Issue in importing images from CSS.

[vigneshshanmugam]

When we import images in CSS like this

.bgImage {
    background-image: url('example.png');
    width: 200px;
    height: 200px;
}

Since the CSS will already be in webpack publicPath folder, the image request for example.png will be

http://localhost:3000/public/public/example-f1df98cf.png

This happens because of this line https://github.com/boopathi/image-size-loader/blob/master/index.js#L18. We need to remove webpack_public_path on toString method to fix this.

Check this #6