Added day 22 part 2

Author: Gentleman1983

build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 // project meta data
 group 'de.havox_design.aoc2015'
-version '0.21.1'
+version '0.21.3'
 
 // Switch to gradle "all" distribution.
 wrapper {

day22/README.md

@@ -124,3 +124,12 @@ Now, suppose the same initial conditions, except that the boss has `14` hit poin
 You start with **50 hit points** and **500 mana points**. The boss's actual stats are in your puzzle input. What is the 
 **least amount of mana** you can spend and still win the fight? (Do not include mana recharge effects as "spending" 
 negative mana.)
+
+# Part Two
+On the next run through the game, you increase the difficulty to **hard**.
+
+At the start of each **player turn** (before any other effects apply), you lose `1` hit point. If this brings you to 
+or below 0 hit points, you lose.
+
+With the same starting stats for you and the boss, what is the **least amount of mana** you can spend and still win 
+the fight?