message: Add note about enabling module transpilation
  This commit adds a note that explains that you have to re-enable transpiling of modules for your test environment.
diff: @@ -97,6 +97,18 @@ You are now set up to use all ES6 features and React specific syntax.
  keep in mind that Jest will automatically define `NODE_ENV` as `test`.
  It will not use `development` section like Babel does by default when no `NODE_ENV` is set.
  +> Note: If you've turned off transpilation of ES2015 modules with the option `{ "modules": false }`, you have to make sure to turn this on in your test enviornment.
  +```json
  +{
  + "presets": [["es2015", { "modules": false }], "react"],
  + "env": {
  + "test": {
  + "presets": [["es2015"], "react"]
  + }
  + }
  +}
  +```
  +
  > Note: `babel-jest` is automatically installed when installing Jest and will automatically transform files if a babel configuration exists in your project. To avoid this behavior, you can explicitly reset the `transform` configuration option:
  ```json
  