Update README.md for christmas_day

Author: Bodacious

katas/3-christmas_day/README.md

@@ -1,25 +1,25 @@
-# The Ghost of Christmas Past
+# The Ghost of Christmas Past 🎅🎄👻
 
-Christmas this year falls on a Wednesday! 
+Christmas, this year, falls on a Wednesday! 
 
 But on which day did Christmas fall in years past?
 
 ## Problem Description
 
-Write a Ruby class that returns the correct weekday of Christmas Day for years past.  
+Write a Ruby class that returns the correct weekday of Christmas Day for previous years.  
 
 ## Requirements and Constraints
 
 ### Requirements 
 
-Your code should return the day of the week that Christmas Day was:
+Your code should return the name of the day of the week that Christmas Day was:
 - Officially celebrated
 - In England
 - Using the relative local date and time
 
 ### Constraints 
 
-**You may not use Ruby's Date, Time or any other third party library to perform date computations for you**.
+**You may not use Ruby's `Date` or `Time` classes, nor any other third party library to perform date computations for you**. Your solution should be derived from first-principles, implementing the logic yourself.
 
 ### Input Specifications
 
@@ -37,4 +37,4 @@ See the attached tests.
 
 1. Make sure your local repository is up to date with origin and you are on the `main` branch.
 2. `bin/cleo_katas attempt christmas_day`
-3. `ruby katas/3-christmas_day/[yourname]/test.rb`
+3. `ruby katas/3-christmas_day/[yourname]/test.rb`