Updated Request Matching (markdown)

Request-Matching.md

@@ -14,6 +14,7 @@ The following paragraphs describe in detail which matchers can be used.
 At this moment these matchers are supported:
 * [ExactMatcher](https://github.com/WireMock-Net/WireMock.Net/wiki/Request-Matching#exact-matcher-exactmatcher)
 * [LinqMatcher](https://github.com/WireMock-Net/WireMock.Net/wiki/Request-Matching#dynamic-linq-linqmatcher)
+* CSharpCodeMatcher
 * [JsonMatcher](https://github.com/WireMock-Net/WireMock.Net/wiki/Request-Matching#json-jsonmatcher)
 * [JsonPathMatcher](https://github.com/WireMock-Net/WireMock.Net/wiki/Request-Matching#json-path-jsonpathmatcher)
 * [JmesPathMatcher](https://github.com/WireMock-Net/WireMock.Net/wiki/Request-Matching#jmes-path-jmespathmatcher)
@@ -115,6 +116,56 @@ server
 }
 ```
 
+## CSharp Code (CSharpCodeMatcher)
+*Advanced!* With this matcher you can use complex C# code to match an JObject or string value.
+* Note that this functionality will only work if enabled in the settings (`AllowCSharpCodeMatcher = true`).
+* The argument-name from the string or JObject to match will be `it`.
+
+
+#### C# option
+```csharp
+var server = FluentMockServer.Start();
+server
+    .Given(Request.Create().WithPath("/cs")
+        .WithParam("from", new CSharpCodeMatcher("return it == \"x\";")))
+    .RespondWith(Response.Create()
+        .WithBody("cs match")
+    );
+```
+
+#### JSON Mapping option
+``` js
+{
+    "Guid": "67ae335b-5d79-42dc-8ca7-236280ab9211",
+    "Priority": 0,
+    "Request": {
+        "Path": {
+            "Matchers": [
+                {
+                    "Name": "WildcardMatcher",
+                    "Pattern": "/cs"
+                }
+            ]
+        },
+        "Params": [
+            {
+                "Name": "from",
+                "Matchers": [
+                    {
+                        "Name": "CSharpCodeMatcher",
+                        "Pattern": "return it == \"x\";"
+                    }
+                ]
+            }
+        ],
+        "Body": {}
+    },
+    "Response": {
+        "Body": "cs match"
+    }
+}
+```
+
 ## JSON (JsonMatcher)
 Checks if a JSON object (or JSON as string) is DeepEqual.