add reverse sort order option, toggle

config.go

@@ -18,6 +18,15 @@ func updateConfig(k, v string) {
 	configChan <- ConfigMsg{k, v}
 }
 
+// Toggle a boolean option
+func (c Config) toggle(k string) {
+	if c[k] == "0" {
+		c[k] = "1"
+	} else {
+		c[k] = "0"
+	}
+}
+
 func NewDefaultConfig() Config {
 	docker := os.Getenv("DOCKER_HOST")
 	if docker == "" {
@@ -26,6 +35,7 @@ func NewDefaultConfig() Config {
 	config := Config{
 		"dockerHost":   docker,
 		"sortField":    "id",
+		"sortReverse":  "0",
 		"enableHeader": "0",
 	}
 	go func() {