Adding a dataset example notebook (#1015)

* Adding the dataset example

Author: markmcd

README.md

@@ -29,6 +29,7 @@ Here are the recent additions and updates to the Gemini API and the Cookbook:
 * **Recently Added Guides:**
   * [Grounding](./quickstarts/Grounding.ipynb) [![Colab](https://storage.googleapis.com/generativeai-downloads/images/colab_icon16.png)](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Grounding.ipynb): Discover different ways to ground Gemini's answer using different tools, from Google Search to Youtube and URLs and the new [**Maps grounding**](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Grounding.ipynb#maps_grounding) tool. 
   * [Batch API](./quickstarts/Batch_mode.ipynb) [![Colab](https://storage.googleapis.com/generativeai-downloads/images/colab_icon16.png)](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/quickstarts/Batch_mode.ipynb): Use Batch API to send large volume of non-time-sensitive requests to the model and get up to 90% discount. 
+  * [Logs and datasets](./examples/Datasets.ipynb) [![Colab](https://storage.googleapis.com/generativeai-downloads/images/colab_icon16.png)](https://colab.research.google.com/github/google-gemini/cookbook/blob/main/examples/Datasets.ipynb): Process and evaluate your collected logs using the Batch API.
 
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