Split Geekbot.net into src/Bot, src/Core, and src/Web

src/Core/Levels/ILevelCalc.cs

@@ -0,0 +1,7 @@
+namespace Geekbot.Core.Levels
+{
+    public interface ILevelCalc
+    {
+        int GetLevel(int? experience);
+    }
+}

src/Core/Levels/LevelCalc.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Geekbot.Core.Levels
+{
+    public class LevelCalc : ILevelCalc
+    {
+        private readonly int[] _levels;
+
+        public LevelCalc()
+        {
+            var levels = new List<int>();
+            double total = 0;
+            for (var i = 1; i < 120; i++)
+            {
+                total += Math.Floor(i + 300 * Math.Pow(2, i / 7.0));
+                levels.Add((int) Math.Floor(total / 16));
+            }
+            _levels = levels.ToArray();
+        }
+
+        public int GetLevel(int? messages)
+        {
+            return 1 + _levels.TakeWhile(level => !(level > messages)).Count();
+        }
+    }
+}