Add 4th customer testimonial

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README.md

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 > [The best juice shop on the whole internet!](https://twitter.com/shehackspurple/status/907335357775085568)
 > ([@shehackspurple](https://twitter.com/shehackspurple)) —
 > [Actually the most bug-free vulnerable application in existence!](https://youtu.be/TXAztSpYpvE?t=26m35s)
-> ([@vanderaj](https://twitter.com/vanderaj))
+> ([@vanderaj](https://twitter.com/vanderaj)) —
+> [First you 😂😂then you 😢](https://twitter.com/kramse/status/1073168529405472768) ([@kramse](https://twitter.com/kramse))
 
 OWASP Juice Shop is probably the most modern and sophisticated insecure web application! It can be used in security trainings, awareness demos, CTFs and as a guinea pig for security tools! Juice Shop encompasses vulnerabilities from the entire [OWASP Top Ten](https://www.owasp.org/index.php/OWASP_Top_Ten) along with many other security flaws found in real-world applications!