Version 3.7.0 release (docusign#93)

* Version v3.7.0-v2.1-20.3.01 release

* Update .travis.yml

* Update README.md

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 3.7.0 release (docusign#93)

* Version v3.7.0-v2.1-20.3.01 release

* Update .travis.yml

* Update README.md

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 3.7.0rc1 release (docusign#92)

* Version 3.7.0rc1-v2.1-20.3.01 release

* Update README.md

* Update .travis.yml

* Update .travis.yml

* Update .travis.yml

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 3.6.0 release (docusign#90)

* Version 3.6.0-v2.1-20.3.00 release

* Update .travis.yml

* Update README.md

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 2.7.0-v2-20.3.00 release (docusign#91)

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 3.6.0rc1 release (docusign#88)

* Version 3.6.0rc1-v2.1-20.3.00 release

* Update .travis.yml

* Update README.md

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version 2.7.0rc1 release (docusign#89)

* Version 2.7.0rc1-v2-20.3.00 release

* Update .travis.yml

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version v3.5.0 release (docusign#86)

* Version v3.5.0-v2.1-20.2.02.02 release

* Update .travis.yml

* Update README.md

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

Version v2.6.0 release (docusign#85)

* Version v2.6.0-v2-20.2.02.02 release

* Update .travis.yml

Co-authored-by: DevCenter-DocuSign <dcdev@docusign.com>

v3.5.0rc1 (docusign#82)

* sdk built through Tir

* v3.5.0rc1 updates & commments API removed

* adding CleanCmd back into setup.py

Co-authored-by: Harsha Rahul Boggaram <HarshaRahul.Boggaram@docusign.com>