Fixed Issue #1

src/WireMock/ResponseBuilders/IHeadersResponseBuilder.cs

@@ -0,0 +1,22 @@
+namespace WireMock.ResponseBuilders
+{
+    /// <summary>
+    /// The HeadersResponseBuilder interface.
+    /// </summary>
+    public interface IHeadersResponseBuilder : IBodyResponseBuilder
+    {
+        /// <summary>
+        /// The with header.
+        /// </summary>
+        /// <param name="name">
+        /// The name.
+        /// </param>
+        /// <param name="value">
+        /// The value.
+        /// </param>
+        /// <returns>
+        /// The <see cref="IHeadersResponseBuilder"/>.
+        /// </returns>
+        IHeadersResponseBuilder WithHeader(string name, string value);
+    }
+}