add tailf plugin

README.md

@@ -49,6 +49,10 @@ Only 4 states. [ref](http://supervisord.org/subprocess.html#process-states)
 ![states](images/states.png)
 
 # Plugin Design
+Current plugins:
+
+- [tailf](https://github.com/codeskyblue/gosuv-tailf)
+
 All command plugin will store in `$HOME/.gosuv/cmdplugin`, gosuv will treat this plugin as a subcommand.
 
 for example:

gosuv.go

@@ -355,7 +355,7 @@ func runPlugin(ctx *cli.Context, name string) {
 	envs := []string{
 		"GOSUV_SERVER_ADDR=" + ctx.GlobalString("addr"),
 		"GOSUV_PLUGIN_NAME=" + name,
-		"GOSUV_FILE_PATH=" + os.Args[0],
+		"GOSUV_PROGRAM=" + os.Args[0],
 	}
 	cmd := exec.Command(filepath.Join(pluginDir, "run"), ctx.Args()...)
 	cmd.Stdout = os.Stdout