message: update readme for local development config
diff: @@ -27,6 +27,18 @@ You will need the following things properly installed on your computer.
  ## Running / Development
  +Configure the application for local development, add the following to your `config/local.js`:
  +```ts
  +module.exports = {
  + // an ally audit can use 100% of your browsers cpu, so use it wisely
  + A11Y_AUDIT: false,
  + // toggle on/off the engine applications you will be working on
  + COLLECTIONS_ENABLED: false,
  + // sourcemaps are useful if you need to step through typescript code in the browser
  + SOURCEMAPS_ENABLED: true,
  +};
  +```
  +
  * `ember serve`
  * View the ember app (alone) at [localhost:4200](http://localhost:4200)
  @@ -50,7 +62,7 @@ To integrate with the legacy front end at [localhost:5000](http://localhost:5000
  To enable the [developer handbook](https://centerforopenscience.github.io/ember-osf-web/handbook) locally,
  add the following to your `config/local.js`:
  -```
  +```ts
  module.exports = {
  HANDBOOK_ENABLED: true,
  };
  