Json fixes (#91) (#92)

* Fixes for JsonPath

* More tests

* Fixes + added tests

src/WireMock.Net/Matchers/ExactObjectMatcher.cs

@@ -0,0 +1,46 @@
+using System.Linq;
+using JetBrains.Annotations;
+
+namespace WireMock.Matchers
+{
+    /// <summary>
+    /// ExactMatcher
+    /// </summary>
+    /// <seealso cref="IObjectMatcher" />
+    public class ExactObjectMatcher : IObjectMatcher
+    {
+        private readonly object _object;
+        private readonly byte[] _bytes;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
+        /// </summary>
+        /// <param name="value">The value.</param>
+        public ExactObjectMatcher([NotNull] object value)
+        {
+            _object = value;
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ExactMatcher"/> class.
+        /// </summary>
+        /// <param name="value">The value.</param>
+        public ExactObjectMatcher([NotNull] byte[] value)
+        {
+            _bytes = value;
+        }
+
+        /// <inheritdoc cref="IObjectMatcher.IsMatch"/>
+        public double IsMatch(object input)
+        {
+            bool equals = _object != null ? Equals(_object, input) : _bytes.SequenceEqual((byte[])input);
+            return MatchScores.ToScore(equals);
+        }
+
+        /// <inheritdoc cref="IMatcher.GetName"/>
+        public string GetName()
+        {
+            return "ExactObjectMatcher";
+        }
+    }
+}