Update README.md

CatQueenCodes · web-flow · commit 074b3b748186 · 2020-10-16T13:26:26.000-04:00
diff --git a/caesar/README.md b/caesar/README.md
@@ -4,6 +4,8 @@ Implement the legendary caesar cipher:
 
 > In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques. It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. For example, with a left shift of 3, D would be replaced by A, E would become B, and so on. The method is named after Julius Caesar, who used it in his private correspondence.
 
+Hint: You will need to convert letters to their corrosponding unicode values.
+
 write a function that takes a string to be encoded and a shift factor and then returns the encoded string:
 
 ```javascript
