Making a repo to test out the basics of the Jest testing library
Making tests using Jest:
Includes a "capitalize" function, which takes a string and returns it with the first character capitalized
Includes a "reverseString" function which returns a reversed string
Includes a "calculator" object that contains function for "add", "subtract", "divide", and "multiply"
Includes a "caesarCipher" function that takes a string and returns it with each character "shifted"
Includes an "analyzeArray" function that takes an array of numbers and returns an object with the following properties: average, min, max, and length