use log.Fatal instead panic on config errors

cmd/root.go

@@ -16,6 +16,7 @@ package cmd
 
 import (
 	"fmt"
+	"log"
 	"os"
 
 	homedir "github.com/mitchellh/go-homedir"
@@ -76,8 +77,7 @@ func initConfig() {
 		// Find home directory.
 		home, err := homedir.Dir()
 		if err != nil {
-			fmt.Println(err)
-			os.Exit(1)
+			log.Fatal(err)
 		}
 
 		// Search config in home directory with name ".go-base" (without extension).