message: Refactor ConsoleLog
diff: @@ -326,6 +326,31 @@ cd superset
  FLASK_ENV=development flask run -p 8088 --with-threads --reload --debugger
  ```
  +#### Logging to the browser console
  +
  +This feature is only available on Python 3. When debugging your application, you can have the server logs sent directly to the browser console using the [ConsoleLog](https://github.com/betodealmeida/consolelog) package. You need to mutate the app, by adding the following to your `config.py` or `superset_config.py`:
  +
  +```python
  +from console_log import ConsoleLog
  +
  +def FLASK_APP_MUTATOR(app):
  + app.wsgi_app = ConsoleLog(app.wsgi_app, app.logger)
  +```
  +
  +Then make sure you run your WSGI server using the right worker type:
  +
  +```bash
  +FLASK_ENV=development gunicorn superset:app -k "geventwebsocket.gunicorn.workers.GeventWebSocketWorker" -b 127.0.0.1:8088 --reload
  +```
  +
  +You can log anything to the browser console, including objects:
  +
  +```python
  +from superset import app
  +app.logger.error('An exception occurred!')
  +app.logger.info(form_data)
  +```
  +
  ### Frontend Assets
  Frontend assets (JavaScript, CSS, and images) must be compiled in order to properly display the web UI. The `superset/assets` directory contains all NPM-managed front end assets. Note that there are additional frontend assets bundled with Flask-Appbuilder (e.g. jQuery and bootstrap); these are not managed by NPM, and may be phased out in the future.
  