Replace README.txt with README.md

Reviewed merge request !4. it was applied successfully .Adding screenshots for the reference.
Note: getting a warning like this-warning: 2 lines add whitespace errors.

Charchil Khandelwal → made their first commit to this issue’s fork.

Updated MR.
Please review.

Thank you.

Patch is not working. Issue is mentioned below.

4.diff.txt:9: trailing whitespace.
A simple and safe way to test and debug outgoing emails
4.diff.txt:10: trailing whitespace.
without having to worry that all your users will get unwanted
4.diff.txt:11: trailing whitespace.
emails. Mail Safety provides a dashboard which catches and logs all
4.diff.txt:33: trailing whitespace.
- Go to `admin/config/development/mail_safety/settings` to enable
4.diff.txt:35: trailing whitespace.
- Go to `admin/config/development/mail_safety/dashboard` to view all
warning: squelched 3 whitespace errors
warning: 8 lines add whitespace errors.

Automatically closed - issue fixed for 2 weeks with no activity.