Use string instead of ID type

user.go

@@ -2,7 +2,7 @@ package budgeteer
 
 // User struct contains Login information
 type User struct {
-	ID       ID
+	ID       string
 	Email    string
 	Password string
 	Name     string
@@ -10,7 +10,7 @@ type User struct {
 
 // UserService provides Methods for CRUD of Users
 type UserService interface {
-	User(id ID) (*User, error)
+	User(id string) (*User, error)
 	UserByUsername(username string) (*User, error)
 	//Users() ([]*User, error)
 	CreateUser(u *User) error