Advent of Code 2015 solutions

Day	Title	C#	Ruby
1	Not Quite Lisp	⭐ ⭐	⭐ ⭐
2	I Was Told There Would Be No Math	⭐ ⭐	⭐ ⭐
3	Perfectly Spherical Houses in a Vacuum		⭐ ⭐
4	The Ideal Stocking Stuffer.		⭐ ⭐
5	Doesn't He Have Intern-Elves For This?		⭐
6	Probably a Fire Hazard.		⭐ ⭐
7	Some Assembly Required.
8	Matchsticks
9	All in a Single Night
10	Elves Look, Elves Say
11	Corporate Policy.
12	JSAbacusFramework.io
13	Knights of the Dinner Table
14	Reindeer Olympics.
15	Science for Hungry People.
16	Aunt Sue
17	No Such Thing as Too Much
18	Like a GIF For Your Yard.
19	Medicine for Rudolph.
20	Infinite Elves and Infinite Houses
21	RPG Simulator 20XX.
22	Wizard Simulator 20XX.
23	Opening the Turing Lock.
24	It Hangs in the Balance.
25	Let It Snow