Merge pull request #2 from joseluisq/feature/help_and_version_flags

Add version and preliminary help flags

README.md

@@ -1,6 +1,6 @@
 # Cline [![Build Status](https://travis-ci.com/joseluisq/cline.svg?branch=master)](https://travis-ci.com/joseluisq/cline) [![codecov](https://codecov.io/gh/joseluisq/cline/branch/master/graph/badge.svg)](https://codecov.io/gh/joseluisq/cline) [![Go Report Card](https://goreportcard.com/badge/github.com/joseluisq/cline)](https://goreportcard.com/report/github.com/joseluisq/cline) [![GoDoc](https://godoc.org/github.com/joseluisq/cline?status.svg)](https://pkg.go.dev/github.com/joseluisq/cline)
 
-> A fast and lightweight CLI package for Go with no dependencies.
+> A fast and lightweight CLI package for Go without external dependencies.
 
 WIP project under **active** development.
 
@@ -31,36 +31,36 @@ import (
 func main() {
 	app := cli.New()
 	app.Name = "enve"
-	app.Summary = "run a program in a modified environment using .env files"
+	app.Summary = "Run a program in a modified environment using .env files"
 	app.Flags = []cli.Flag{
 		cli.FlagString{
 			Name:    "file",
-			Summary: "load environment variables from a file path",
+			Summary: "Load environment variables from a file path",
 			Value:   ".env",
 			Aliases: []string{"f"},
 		},
 		cli.FlagBool{
 			Name:    "verbose",
-			Summary: "load environment variables from a file path",
+			Summary: "Enable more verbose info",
 			Value:   false,
 			Aliases: []string{"v"},
-			EnvVar:  "ENV_FILE",
+			EnvVar:  "ENV_VERBOSE",
 		},
 	}
 	app.Commands = []cli.Cmd{
 		{
 			Name:    "info",
-			Summary: "show command information",
+			Summary: "Show command information",
 			Flags: []cli.Flag{
 				cli.FlagInt{
 					Name:    "version",
-					Summary: "enable more verbose command information",
+					Summary: "Enable more verbose command information",
 					Value:   10,
 					Aliases: []string{"z"},
 				},
 				cli.FlagBool{
 					Name:    "detailed",
-					Summary: "enable info details",
+					Summary: "Enable info details",
 					Value:   true,
 					Aliases: []string{"d"},
 				},
@@ -85,11 +85,29 @@ func main() {
 		fmt.Printf("App Flag `verbose` opted: `%s`\n", ctx.Flags.StringSlice("verbose"))
 		return nil
 	}
-	if err := app.Run(); err != nil {
+	if err := app.Run(os.Args); err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
 }
+
+// OUTPUT:
+// 
+// go run examples/main.go -h
+// NAME: enve [OPTIONS] COMMAND
+
+// Run a program in a modified environment using .env files
+
+// OPTIONS:
+//   --file       Load environment variables from a file path
+//   --verbose    Enable more verbose info
+//   --version    Prints version information
+//   --help       Prints help information
+
+// COMMANDS:
+//   info    Show command information
+
+// Run 'enve COMMAND --help' for more information on a command
 ```
 
 ## Contributions