adds Rot 13 Cypher project

[Capocaccia]

No description provided.

[thinkswell]

Hey @Capocaccia , Your project is good.
But while encrypting I think you missed the last letter, cause on decrypting the encrypted text it is not showing the last letter of my string.
I would also like to suggest you, do consider the case of the letters.
Like: Hello -> Uryy
Uryy -> Hello
Your current code giving: Urry -> hell
Please look out to this.
Thank You! 😄

[Capocaccia]

@thinkswell I have corrected these issues. Please take another look when you have a moment. Thank you.

[thinkswell]

Looks Excellent! 🎉