Added day 22 part 1

Author: Gentleman1983

build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 // project meta data
 group 'de.havox_design.aoc2015'
-version '0.21.0'
+version '0.21.1'
 
 // Switch to gradle "all" distribution.
 wrapper {

day22/README.md

@@ -0,0 +1,126 @@
+# Day 22: Wizard Simulator 20XX
+Little Henry Case decides that defeating bosses with [swords and stuff](https://adventofcode.com/2015/day/21) is 
+boring. Now he's playing the game with a wizard. Of course, he gets stuck on another boss and needs your help again.
+
+In this version, combat still proceeds with the player and the boss taking alternating turns. The player still goes 
+first. Now, however, you don't get any equipment; instead, you must choose one of your spells to cast. The first 
+character at or below `0` hit points loses.
+
+Since you're a wizard, you don't get to wear armor, and you can't attack normally. However, since you do **magic 
+damage**, your opponent's armor is ignored, and so the boss effectively has zero armor as well. As before, if armor 
+(from a spell, in this case) would reduce damage below `1`, it becomes `1` instead - that is, the boss' attacks always 
+deal at least `1` damage.
+
+On each of your turns, you must select one of your spells to cast. If you cannot afford to cast any spell, you lose. 
+Spells cost **mana**; you start with **500** mana, but have no maximum limit. You must have enough mana to cast a spell, 
+and its cost is immediately deducted when you cast it. Your spells are Magic Missile, Drain, Shield, Poison, and 
+Recharge.
+* **Magic Missile** costs `53` mana. It instantly does `4` damage.
+* **Drain** costs `73` mana. It instantly does `2` damage and heals you for `2` hit points.
+* **Shield** costs `113` mana. It starts an **effect** that lasts for `6` turns. While it is active, your armor is 
+increased by `7`.
+* **Poison** costs `173` mana. It starts an **effect** that lasts for `6` turns. At the start of each turn while it is 
+active, it deals the boss `3` damage.
+* **Recharge** costs `229` mana. It starts an **effect** that lasts for `5` turns. At the start of each turn while it 
+is active, it gives you `101` new mana.
+
+**Effects** all work the same way. Effects apply at the start of both the player's turns and the boss' turns. Effects 
+are created with a timer (the number of turns they last); at the start of each turn, after they apply any effect they 
+have, their timer is decreased by one. If this decreases the timer to zero, the effect ends. You cannot cast a spell 
+that would start an effect which is already active. However, effects can be started on the same turn they end.
+
+For example, suppose the player has `10` hit points and `250` mana, and that the boss has `13` hit points and 
+`8` damage:
+```
+-- Player turn --
+- Player has 10 hit points, 0 armor, 250 mana
+- Boss has 13 hit points
+  Player casts Poison.
+
+-- Boss turn --
+- Player has 10 hit points, 0 armor, 77 mana
+- Boss has 13 hit points
+  Poison deals 3 damage; its timer is now 5.
+  Boss attacks for 8 damage.
+
+-- Player turn --
+- Player has 2 hit points, 0 armor, 77 mana
+- Boss has 10 hit points
+  Poison deals 3 damage; its timer is now 4.
+  Player casts Magic Missile, dealing 4 damage.
+
+-- Boss turn --
+- Player has 2 hit points, 0 armor, 24 mana
+- Boss has 3 hit points
+  Poison deals 3 damage. This kills the boss, and the player wins.
+```
+Now, suppose the same initial conditions, except that the boss has `14` hit points instead:
+```
+-- Player turn --
+- Player has 10 hit points, 0 armor, 250 mana
+- Boss has 14 hit points
+  Player casts Recharge.
+
+-- Boss turn --
+- Player has 10 hit points, 0 armor, 21 mana
+- Boss has 14 hit points
+  Recharge provides 101 mana; its timer is now 4.
+  Boss attacks for 8 damage!
+
+-- Player turn --
+- Player has 2 hit points, 0 armor, 122 mana
+- Boss has 14 hit points
+  Recharge provides 101 mana; its timer is now 3.
+  Player casts Shield, increasing armor by 7.
+
+-- Boss turn --
+- Player has 2 hit points, 7 armor, 110 mana
+- Boss has 14 hit points
+  Shield's timer is now 5.
+  Recharge provides 101 mana; its timer is now 2.
+  Boss attacks for 8 - 7 = 1 damage!
+
+-- Player turn --
+- Player has 1 hit point, 7 armor, 211 mana
+- Boss has 14 hit points
+  Shield's timer is now 4.
+  Recharge provides 101 mana; its timer is now 1.
+  Player casts Drain, dealing 2 damage, and healing 2 hit points.
+
+-- Boss turn --
+- Player has 3 hit points, 7 armor, 239 mana
+- Boss has 12 hit points
+  Shield's timer is now 3.
+  Recharge provides 101 mana; its timer is now 0.
+  Recharge wears off.
+  Boss attacks for 8 - 7 = 1 damage!
+
+-- Player turn --
+- Player has 2 hit points, 7 armor, 340 mana
+- Boss has 12 hit points
+  Shield's timer is now 2.
+  Player casts Poison.
+
+-- Boss turn --
+- Player has 2 hit points, 7 armor, 167 mana
+- Boss has 12 hit points
+  Shield's timer is now 1.
+  Poison deals 3 damage; its timer is now 5.
+  Boss attacks for 8 - 7 = 1 damage!
+
+-- Player turn --
+- Player has 1 hit point, 7 armor, 167 mana
+- Boss has 9 hit points
+  Shield's timer is now 0.
+  Shield wears off, decreasing armor by 7.
+  Poison deals 3 damage; its timer is now 4.
+  Player casts Magic Missile, dealing 4 damage.
+
+-- Boss turn --
+- Player has 1 hit point, 0 armor, 114 mana
+- Boss has 2 hit points
+  Poison deals 3 damage. This kills the boss, and the player wins.
+```
+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.)

day22/src/main/resources/day22.txt

@@ -0,0 +1,2 @@
+Hit Points: 55
+Damage: 8