Add postgres package

user.go

@@ -0,0 +1,14 @@
+package budgeteer
+
+type User struct {
+	ID      int
+	Email    string
+	Password string
+}
+
+type UserService interface {
+	User(id int) (*User, error)
+	//Users() ([]*User, error)
+	//CreateUser(u *User) error
+	//DeleteUser(id int) error
+}