add rootpath to config

config.go

@@ -7,14 +7,15 @@ import (
 )
 
 func DefaultConfig() Config {
-  return Config{
-    DB:     "./sgot.db",
+  c := Config{
+    RootPath: "./",
     APIkey: "thisIsNotASecretTokenNow",
     Host:   "localhost",
     Port:   "6889",
     Title:  "Sgot",
-    RootPath: "./",
   }
+  c.DB = c.RootPath + "shrty.go"
+  return c
 }
 
 type Config struct {

config_test.go

@@ -24,7 +24,7 @@ func TestConfig_ReadConfig(t *testing.T){
 		"--title=title",
 		"--apikey=apikey",
 		"--domain=domain",
-		"--root=root"
+		"--root=root",
 	}
 
 	expected := &Config{