allow responses bodies to be seqs

@@ -109,6 +109,8 @@ A Ring response is a Clojure map containing at least the following keys and corr
   the response's status code. The respond body is handled according to its type:
   String:
     Contents are sent to the client as-is.
+  ISeq:
+    Each element of the seq is sent to the client as a string.
   File:
     Contents at the specified location are sent to the client. The server may 
     use an optimized method to send the file if such a method is available.

@@ -47,6 +47,10 @@
     (string? body)
       (with-open [writer (.getWriter response)]
         (.println writer body))
+    (seq? body)
+      (with-open [writer (.getWriter response)]
+        (doseq [chunk body]
+          (.print writer (str chunk))))
     (instance? InputStream body)
       (let [#^InputStream in body]
         (with-open [out (.getOutputStream response)]