Adding guess.rb to create a program where the user guesses a number
Program generates a random number and asks user to guess it.  If they number is correct user is told, if incorrect user guess again.
Fixed typo at the top. number_rand
Adding user message, if guess 2 was correct, displays "You got it", if not displays, user has another chance.
Adding integers (.to_s) to ensure values are numbers
Added additional language and revised the method for higher than or less than.  Also fixed an error due to the Syntax of the if statement on line 18