A Caesar Cipher is a cipher where all letters are shifted forward by a certain value, called the key, for example, if the key is 1: HELLO becomes IFMMP (Notice every letter goes one letter forward)
IMPORTANT: -If you were given a key and are deciphering a message, set the "Caesar Shift" variable to 26 minus the key So, if the Caesar Shift is 25: IFMMP becomes HELLO -DON'T TYPE NUMBERS!
