Change the order of deletion in sagemaker tests. Add badges for doc builds and pypi versions.

Author: ertukara

README.rst

@@ -559,6 +559,9 @@ The following are details about the warnings you might see:
 
 For more information, see http://www.gnupg.org.
 
+.. |codebuild| image:: https://codebuild.us-east-2.amazonaws.com/badges?uuid=eyJlbmNyeXB0ZWREYXRhIjoiZ2crZkxWN2lPTHhBdzAwOUIvZDlUQ2txQTRyYnZnQ3RaQ0dQYkhsb2EvT04xOVRIdDBqYWFOaS8weklGU216OUtuc29pZFQvQjgrRDhRbWJoeEJocFV3PSIsIml2UGFyYW1ldGVyU3BlYyI6IlRQUlZQd1ZLdGRqWkdVdWkiLCJtYXRlcmlhbFNldFNlcmlhbCI6MX0%3D&branch=master
+ :target: https://us-east-2.console.aws.amazon.com/codesuite/codebuild/projects/StepFunctionsPythonSDK-unittests-private/history?region=us-east-2
+ :alt: Unit Tests Build Status
 
 .. |codebuild| image:: https://codebuild.us-east-2.amazonaws.com/badges?uuid=eyJlbmNyeXB0ZWREYXRhIjoiZ2crZkxWN2lPTHhBdzAwOUIvZDlUQ2txQTRyYnZnQ3RaQ0dQYkhsb2EvT04xOVRIdDBqYWFOaS8weklGU216OUtuc29pZFQvQjgrRDhRbWJoeEJocFV3PSIsIml2UGFyYW1ldGVyU3BlYyI6IlRQUlZQd1ZLdGRqWkdVdWkiLCJtYXRlcmlhbFNldFNlcmlhbCI6MX0%3D&branch=master
  :target: https://us-east-2.console.aws.amazon.com/codesuite/codebuild/projects/StepFunctionsPythonSDK-unittests-private/history?region=us-east-2
@@ -570,4 +573,4 @@ For more information, see http://www.gnupg.org.
 
 .. |pypi| image:: https://img.shields.io/pypi/v/stepfunctions
  :target: https://pypi.org/project/stepfunctions/
- :alt: PyPI
+ :alt: PyPI