Made the callback URL an environment variable to avoid having to keep

rebuilding.

Author: lazyhacker

README.md

@@ -76,13 +76,13 @@ In the main directory:
 ```
 export GOOGLE_CLIENT_ID=<your client ID from Google>
 export GOOGLE_CLIENT_SECRET=<your client secret from Google>
+export GOOGLE_CALLBACK_URL=<oAuth Callback URL that you set with Google>
 <path-to-go-links>/go-links
 ```
 
-You can chose which HTTP port to use by passing to `go-links` the port through
-the -port parameter or set the environment variable PORT:
-
-`go-links -port=8888`
+You can chose which HTTP and HTTPS ports to use by passing to `go-links` the
+port through command line parameters or environment variables.  `go-links`-help`
+will show the different parameters.
 
 ## Browser Extension
 

google_oauth.go

@@ -18,7 +18,7 @@ var gconfig = &oauth2.Config{
 	// obtained from https://console.developers.google.com
 	ClientID:     os.Getenv("GOOGLE_CLIENT_ID"),
 	ClientSecret: os.Getenv("GOOGLE_CLIENT_SECRET"),
-	RedirectURL:  "http://localhost:8080/_callback", // This should match your configured redirect URI
+	RedirectURL:  os.Getenv("GOOGLE_CALLBACK_URL"), // This should match your configured redirect URI
 	Scopes: []string{
 		"https://www.googleapis.com/auth/userinfo.email",
 		"https://www.googleapis.com/auth/userinfo.profile",