Add script and docs for auth

README.md

@@ -40,6 +40,7 @@ You will be asked some questions during the initial configuration of TempGopher.
 * `Invert heating switch` - If set to `true`, the heating will be ON when the switch is LOW. This should usually be `false`, so that is the default
 * `Enable verbose logging` - If set to `true`, TempGopher will display in the console every thermostat reading. This can be quite verbose, so the default is `false`.
 * `Write data to an Influx database?` - Whether or not to configure an Influx database
+* `Enable user authentication?` - Whether or not to enable authentication
 
 ## Example configuration script
 
@@ -83,4 +84,11 @@ Influx UserAgent [InfluxDBClient]:
 Influx timeout (in seconds) [30]:
 Influx database []: tempgopher
 Enable InsecureSkipVerify? [fasle]:
+Username: mike
+Password: ********
+Add another user? [y/N]: y
+Username: foo
+Password: ***
+Add another user? [y/N]: n
+
 ```

cli.go

@@ -7,6 +7,8 @@ import (
 	"strconv"
 	"strings"
 
+	"github.com/howeyc/gopass"
+
 	"github.com/yryz/ds18b20"
 )
 
@@ -190,6 +192,29 @@ func PromptForConfiguration() Config {
 		}
 	}
 
+	fmt.Println("Enable user authentication?")
+	fmt.Print("[Y/n]: ")
+	choice = ReadInput(reader, "y")
+	if strings.ToLower(choice)[0] == 'y' {
+		another := true
+		for another {
+			fmt.Print("Username: ")
+			username := ReadInput(reader, "")
+			fmt.Print("Password: ")
+			password, err := gopass.GetPasswdMasked()
+			if err != nil {
+				panic(err)
+			}
+			config.Users = append(config.Users, User{username, string(password)})
+
+			fmt.Print("Add another user? [y/N]: ")
+			choice = ReadInput(reader, "n")
+			if strings.ToLower(choice)[0] == 'n' {
+				another = false
+			}
+		}
+	}
+
 	return config
 }