message: Improve a bit the dev docs, based on my experience
diff: @@ -55,7 +55,8 @@ your cluster to your local development server. Run the following commands:
  cd ../dashboard
  git checkout 2.0
  yarn # install any new packages
  -telepresence --namespace kubeapps --method inject-tcp --swap-deployment kubeapps-dashboard-ui --expose 3000:8080 --run yarn run start
  +telepresence --namespace kubeapps --method inject-tcp --swap-deployment kubeapps-dashboard-ui --expose 3000:8080 --run-shell
  +yarn run start # when telepresence returns a shell
  ```
  Now, to access the React app, simply run `kubeapps dashboard` as you usually
  @@ -65,3 +66,7 @@ would:
  cd ../kubeapps
  ./kubeapps dashboard
  ```
  +
  +#### Troubleshooting
  +
  +In some cases, the react processes keep listening on the 3000 port, even when you disconnect telepresence. If you see that `localhost:3000` is still serving the dashboard, even with your telepresence down, check if there is a react process running (`ps aux | grep react`) and kill it.
  