add notebook badge

Author: danabens

README.rst

@@ -63,6 +63,9 @@ SageMaker Experiments Python SDK
     :target: https://readthedocs.org/projects/sagemaker-experiments/
     :alt: Read the Docs - Sagemaker Experiments
 
+.. image:: https://mybinder.org/badge_logo.svg
+    :target: https://mybinder.org/v2/gh/awslabs/amazon-sagemaker-examples/master?filepath=sagemaker-experiments%2Fmnist-handwritten-digits-classification-experiment.ipynb
+
 
 
 Experiment tracking in SageMaker Training Jobs, Processing Jobs, and Notebooks.