Exporting HTTP module and public HTTP write.

Author: cloutiertyler

Sources/Edge/Edge.swift

@@ -10,3 +10,4 @@
 @_exported import IOStream
 @_exported import TCP
 @_exported import RunLoop
+@_exported import HTTP

Sources/HTTP/ClientConnection.swift

@@ -42,7 +42,7 @@ public final class ClientConnection {
         }
     }
 
-    func write(_ response: Response) {
+    public func write(_ response: Response) {
         socket.write(buffer: response.serialized).start()
     }