Create index.rst for the new boto3 directory (aws#2834)

Author: eitansela

boto3/index.rst

@@ -0,0 +1,10 @@
+Boto3 with SageMaker Examples
+==============================
+
+You use the AWS SDK for Python (Boto3) to create, configure, and manage AWS services, such as Amazon Elastic Compute Cloud (Amazon EC2) and Amazon Simple Storage Service (Amazon S3). The SDK provides an object-oriented API as well as low-level access to AWS services.
+Boto3 client is a low-level client representing Amazon SageMaker Service that provides APIs for creating and managing Amazon SageMaker resources.
+
+.. toctree::
+ :maxdepth: 1
+
+ built-in-frameworks/scikit-learn/boto3_scikit_retrain_model_and_deploy_to_existing_endpoint/boto3_scikit_retrain_model_and_deploy_to_existing_endpoint