Check aggregate exception during startup (#235)

src/WireMock.Net/Exceptions/WireMockException.cs

@@ -0,0 +1,35 @@
+using System;
+
+namespace WireMock.Exceptions
+{
+    /// <summary>
+    /// WireMockException
+    /// </summary>
+    /// <seealso cref="Exception" />
+    public class WireMockException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="WireMockException"/> class.
+        /// </summary>
+        public WireMockException()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="WireMockException"/> class.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public WireMockException(string message) : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="WireMockException"/> class.
+        /// </summary>
+        /// <param name="message">The message.</param>
+        /// <param name="inner">The inner.</param>
+        public WireMockException(string message, Exception inner) : base(message, inner)
+        {
+        }
+    }
+}