title: Including other ES6 modules in development
body: <p>I'm developing a react component, and it depends on an ES6 component I'm also developing which I wrote first. </p>
  
  <p>What's the normal way to include this at dev time while I'm working on the second component. Obviously, if the dependancy was in NPM it would be in my node_modules and I'd just import it. </p>
  
  <p>I don't want to reference it by path as I'd have to remove that path every time I commit or publish. </p>
  
  <p>Is there anything that would watch for changes in Module A and update the dependancy version in Module B? </p>