End points:
//--- User Routes ---//
- User Login - POST
https://habit-tracker-demo.herokuapp.com/user/login
- User Signup - POST
https://habit-tracker-demo.herokuapp.com/user/register
//--- Habit / Goal routes ---//
- Fetch User Goals - GET
https://habit-tracker-demo.herokuapp.com/goals
- Create/Update a Goal - POST
https://habit-tracker-demo.herokuapp.com/goals
- Delete Goal - DELETE