Adjust README ordering, print "serving at", mention errors.

dmitshur · dmitshur · commit 09c06ae2bc23 · 2015-07-10T12:42:18.000-06:00
Thanks @Frumious for providing feedback!
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # Gopherpen
 
-This is a template project that will let you easily get started with GopherJS. It includes some simple HTML, CSS, and Go code for the frontend. Make some changes, and refresh in browser to see results.
+This is a template project that will let you easily get started with GopherJS. It includes some simple HTML, CSS, and Go code for the frontend. Make some changes, and refresh in browser to see results. When there are errors in your frontend Go code, they will show up in the dev console.
 
 Once you're done making changes, you can create a static production binary that has all assets built in, and can be deployed to any server.
 
@@ -13,6 +13,12 @@ go get -u github.com/gopherjs/gopherpen
 go get -u -tags=dev github.com/gopherjs/gopherpen
 ```
 
+To run `go generate`, you'll also need:
+
+```
+go get -u github.com/shurcooL/vfsgen
+```
+
 ## Building
 
 ### Development Build
@@ -32,14 +38,6 @@ go generate
 go build
 ```
 
-### `go generate` Dependencies
-
-To run `go generate`, you'll also need:
-
-```
-go get -u github.com/shurcooL/vfsgen
-```
-
 License
 -------
 
diff --git a/main.go b/main.go
@@ -2,9 +2,11 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"html/template"
 	"log"
 	"net/http"
+	"strings"
 	"sync"
 
 	"github.com/shurcooL/go/gzip_file_server"
@@ -55,8 +57,17 @@ func main() {
 	http.HandleFunc("/", mainHandler)
 	http.Handle("/assets/", gzip_file_server.New(assets))
 
+	printServingAt(*httpFlag)
 	err = http.ListenAndServe(*httpFlag, nil)
 	if err != nil {
 		log.Fatalln("ListenAndServe:", err)
 	}
 }
+
+func printServingAt(addr string) {
+	hostPort := addr
+	if strings.HasPrefix(hostPort, ":") {
+		hostPort = "localhost" + hostPort
+	}
+	fmt.Printf("serving at http://%s/\n", hostPort)
+}
