Return error from NewApp

Floating up the error seems like a best practice.

Part of #7

cmd/util.go

@@ -65,8 +65,10 @@ func InitApp() {
 		cobra.CheckErr(err)
 	}
 
-	var app = model.NewApp(cfg.DbPath)
-	App = &TApp{&app, &cfg}
+	var app, err = model.NewApp(cfg.DbPath)
+	cobra.CheckErr(err)
+
+	App = &TApp{app, &cfg}
 }
 
 var fmt_str = "%-10s %-20s %s\n"

model/entry.go

@@ -20,12 +20,12 @@ type App struct {
 	*db.DbCtx
 }
 
-func NewApp(db_path string) App {
+func NewApp(db_path string) (*App, error) {
 	app, err := db.Init(db_path)
 	if err != nil {
-		log.Fatal(err.Error())
+		return nil, err
 	}
-	return App{app}
+	return &App{app}, nil
 
 }