Add benchmark for writing binary property lists

plist-cil.benchmark/BinaryPropertyListWriterBenchmarks.cs

@@ -0,0 +1,25 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Attributes.Jobs;
+
+namespace Claunia.PropertyList.Benchmark
+{
+    [CoreJob]
+    [MemoryDiagnoser]
+    public class BinaryPropertyListWriterBenchmarks
+    {
+        private NSObject data = null;
+
+        [GlobalSetup]
+        public void Setup()
+        {
+            data = PropertyListParser.Parse("plist.bin");
+        }
+
+
+        [Benchmark]
+        public byte[] WriteLargePropertylistTest()
+        {
+            return BinaryPropertyListWriter.WriteToArray(data);
+        }
+    }
+}

plist-cil.benchmark/Program.cs

@@ -8,6 +8,7 @@ namespace Claunia.PropertyList.Benchmark
         static void Main(string[] args)
         {
             var summary = BenchmarkRunner.Run<BinaryPropertyListParserBenchmarks>();
+            summary = BenchmarkRunner.Run<BinaryPropertyListWriterBenchmarks>();
         }
     }
 }