Add Release Notes for latest release 3.1.5

[dineshb-qa]

The release notes are not updated for latest release 3.1.5

Suggestion :

• Whenever there will be new release then please publish the corresponding details or release notes on your site as well

[Carlbc18]

Thank you for pointing that out. I don't have control over what is published on the site, but i can update the release notes.

[sameer49]

@dineshb-qa Yes Sure!

[dineshb-qa]

@sameer49 : You Closed this issue but the release notes are still not updated for latest release 3.1.5