Conditionally adding hot-loader to coffee in addition to jsx

[sansthesis]

This addresses #123, I believe.

I say I believe because I'm having trouble testing my module via npm link. I tested it by editing the npm installed index.js in my node_modules directory.

[sansthesis]

This adds react-hot to coffee-loader and cjsx-loader entries alongside babel-loader, which was hardcoded before this pr.

[lukekarrys]

Thanks @JasonRose! We need to figure out the best way to combine this with #65. As was mentioned in that issue (#65 (comment)) using the new babel-plugin-react-transform stuff will not work for non-babel loaders like coffee-loader. I'd personally like to keep support for react-hot-loader and the new babel transform stuff so that we can support hot reloading in as many loaders as possible, and can hopefully figure that out once I have some time to review this and #117.

[sansthesis]

Ok, I'll implement the change in my webpack.config.js and wait.

[sansthesis]

If anybody else wants hot loading for their cjsx, I added this to my webpack.config.js:

//somewhere above: var cfg = getConfig({...});

if(cfg.spec.isDev && cfg.spec.devServer.hot) {
  cfg.module.loaders.forEach(function (loader) {
    var loaders = loader.loaders || [];
    if (loaders.indexOf('coffee-loader') > -1) {
      loaders.unshift('react-hot');
    }
  });
}

[lukekarrys]

Published as v6.1.0.

Also as discussed in #117 (comment), react-hot-loader will probably be removed in v7.0.0 with 6.x.y being what we point people to use if they still need to use it.