Create Security Policy file for repo

Providing guidelines for reporting security issues, [1]
our commitment to quick responses,
and some extra tips to keep our project in good shape. 🛡️

Happy hacking! 🚀

[1]: https://docs.github.com/en/code-security/getting-started/adding-a-security-policy-to-your-repository

.github/SECURITY.md

@@ -0,0 +1,25 @@
+# Security Policy
+
+🛡️
+Thank you for your interest in the security of this project.
+Below you will find information on reporting security issues
+and our approach to addressing them.
+
+## Reporting a Vulnerability
+
+🔐
+Please report any security issues privately to Alek [via DM on Twitter](https://twitter.com/torrocus)
+or through the contact form.
+If you do not receive a response within two business days, please contact
+[Agnieszka](https://twitter.com/womanonrails) via DM on Twitter only.
+
+For non-critical issues that have been discussed and approved,
+you are welcome to create a GitHub issue or even submit a pull request.
+We believe that everyone can learn something valuable.
+We would greatly appreciate your contribution.
+
+🚨
+We do not have a bounty program.
+
+Happy hacking!
+🚀