Venkat Mikkilineni

We added a new functionality as part of [2.2.0](https://github.com/Nike-Inc/signal_analog/blob/master/CHANGELOG.md#220-2018-09-27) where you can create new dashboards within existing dashboards. We need to add an example of that functionality in [here](https://github.com/Nike-Inc/signal_analog/blob/master/examples/dashboards.py)

**Scenario:** 1. Created a new detector along with a Dashboard. 2. Changed that detector to a different one and ran a dashboard update. **User expectation:** New detector will be created...