documentation

the compatibility section should more clearly explain that projects built with Rollup are already compatible with CommonJS systems

README.md

@@ -81,7 +81,7 @@ Rollup can import existing CommonJS modules [through a plugin](https://github.co
 
 ### Publishing ES6 Modules
 
-If your `package.json` has a `module` field, ES6-aware tools like Rollup and [webpack 2](https://webpack.js.org/) can [import the ES6 module version of the package](https://github.com/rollup/rollup/wiki/pkg.module) directly, instead of relying on the legacy CommonJS version.
+To make sure your ES6 modules are immediately usable by tools that work with CommonJS such as Node.js and webpack, you can use Rollup to compile to UMD or CommonJS format, and then point to that compiled version with the `main` property in your `package.json` file. If your `package.json` file also has a `module` field, ES6-aware tools like Rollup and [webpack 2](https://webpack.js.org/) will [import the ES6 module version](https://github.com/rollup/rollup/wiki/pkg.module) directly.
 
 ###