Updated codec interface and code. Painful stuff

examples/server/main.go

@@ -3,7 +3,6 @@ package main
 import (
 	log "github.com/golang/glog"
 	"github.com/micro/go-micro/cmd"
-	"github.com/micro/go-micro/codec/bson"
 	"github.com/micro/go-micro/examples/server/handler"
 	"github.com/micro/go-micro/examples/server/subscriber"
 	"github.com/micro/go-micro/server"
@@ -13,16 +12,15 @@ func main() {
 	// optionally setup command line usage
 	cmd.Init()
 
-	server.DefaultServer = server.NewServer(
-		server.Codec("application/bson", bson.Codec),
-	)
+	//	server.DefaultServer = server.NewServer(
+	//		server.Codec("application/bson", bson.Codec),
+	//	)
 
 	// Initialise Server
 	server.Init(
 		server.Name("go.micro.srv.example"),
 	)
 
-
 	// Register Handlers
 	server.Handle(
 		server.NewHandler(