Merge branch 'develop'

Author: dustinmoris

src/Suave.AspNetCore/HttpContextExtensions.cs

@@ -118,7 +118,16 @@ public static async Task SetResponseFromSuaveResult(this HttpContext context, Ht
                 var key = header.Item1;
                 var value = header.Item2;
 
-                context.Response.Headers.Add(key, new StringValues(value));
+                StringValues existingStringValues;
+        
+                if(!context.Response.Headers.TryGetValue(key, out existingStringValues))
+                {
+                    context.Response.Headers[key] = new StringValues(value);
+                }
+                else 
+                {
+                    context.Response.Headers[key] = StringValues.Concat(existingStringValues, new StringValues(value));
+                }
             }
 
             // Set HTTP body

src/Suave.AspNetCore/project.json

@@ -1,6 +1,6 @@
 {
   "name": "Suave.AspNetCore",
-  "version": "0.4.0-*",
+  "version": "0.4.1-*",
   "description": "Small .NET Core library which provides middleware to run a Suave app (on top of Kestrel) within ASP.NET Core.",
   "copyright": "Copyright 2016 Dustin Moris Gorski",
   "authors": [ "Dustin Moris Gorski" ],