reapp/reapp

Create a reapp folder
Clone the kitchen sink repository
Clone this repository
Run sudo npm link inside this repository
Important: Run rm -r node_modules/react in reapp-ui and be sure react isn't duplicated in Webpack build
Run npm run build in this directory, this will build your reapp-ui for the first time and put it into the ./build folder.
Run npm run copyAssets in this directory to copy assets to the babel output directory.
Run npm run watch in this directory to start babel compiler. Note: Be sure to edit in ./src directory only.
Run ln -s $PREFIX/lib/node_modules/reapp-ui/build node_modules/reapp-ui inside the kitchen sink repository. The placeholder $PREFIX is the prefix used for the installation of node. Usually this is /usr/local. The command npm config get prefix can also be used to find the prefix. (The npm link command will not work here because it will reference the project root instead of build output directory.)
This will link your reapp-ui module into your kitchen sink repo. Now you can:

Run reapp run -d inside kitchen sink
Go to localhost:3010
Make edits inside reapp-ui and they will automatically compile into the kitchen sink.
Warning: When running locally you may run into some unique bugs. Because npm link runs an npm install, it will often install multiple versions of React into your modules folders, causing Webpack to bundle multiple versions of it into your app. This can cause a variety of errors. If you see stuff that warns about Mount, Link, Context, it is most likely because of this. Delete the react folder inside reapp-ui and any other sub-modules and re-run Webpack.