Print out help message.

Print our help message when run with no argument's or --help|-h.

main.go

@@ -10,6 +10,21 @@ import (
 	miniflux "miniflux.app/client"
 )
 
+// Help message
+const HELP = `examples:
+    mfeed create {category_id} {feed_url}
+
+usage: mfeed [-h] {feeds,categories,create} ...
+    feeds       list all the feeds you have
+    categories  list all the categories you have
+    create      create a new feed
+
+positional arguments:
+  {feeds, categories, create}
+
+options:
+  -h, --help  shows this help page`
+
 // Crreate the config struct
 type Configuration struct {
 	Instance  string
@@ -18,6 +33,18 @@ type Configuration struct {
 }
 
 func main() {
+	// print help message based on first argument
+	if len(os.Args) < 2 {
+		fmt.Println(HELP)
+		return
+	} else if os.Args[1] == "-h" {
+		fmt.Println(HELP)
+		return
+	} else if os.Args[1] == "--help" {
+		fmt.Println(HELP)
+		return
+	}
+
 	// get config folder locaation
 	config_dir, _ := os.UserConfigDir()
 
@@ -51,12 +78,6 @@ func main() {
 		string(pass),
 	)
 
-	// check if atleast one option is provided
-	if len(os.Args) < 2 {
-		fmt.Println("No option provided!")
-		return
-	}
-
 	// Run fuction based on first argument
 	switch os.Args[1] {
 	case "feeds":