Add examples

Change:
* Adds examples for the dev portal

Functional Test:

- [x] installed package, replaced client ID and API key with a test client, and ran the examples successfully:

```bash
  $ python orders_table.py 
Synced order with id  1
Synced order with id  2
Synced order with id  3
Synced order with id  4
Synced order with id  5

  $ python users_table.py 
Synced user with id  1
Synced user with id  2
Synced user with id  3
Synced user with id  4
Synced user with id  5
```
same thing about comments in this file