Add Suburb API

Adds a suburb.

URL

/suburbs
Method:

POST
URL Params

None
Data Params

   {
     "name": "Warranwood",
     "state": "VIC",
     "postCode": "/postcodes/1"
   }

Required:

name=[string]

state=[string]

postCode=[reference to post code HATEOAS resource]

Security
- Authorization Server Endpoint for retrieving authorization code and exchanging for {JWT_ACCESS_TOKEN}: /oauth/authorize
- Authorization header: "Authorization", "Bearer {JWT_ACCESS_TOKEN}"
Success Response:
- Code: 200
  
  Content:

  {
    "name": "Warranwood",
    "state": "VIC",
    "_links": {
        "self": {
            "href": "http://localhost:8080/suburbs/38"
        },
        "suburb": {
            "href": "http://localhost:8080/suburbs/38"
        },
        "postCode": {
            "href": "http://localhost:8080/suburbs/38/postCode"
        }
    }
}

Error Response 400:
- Code: 400 BAD REQUEST
  
  Content

{
    "httpStatus": "409 - CONFLICT",
    "errorCode": "2e482454-5148-4bf4-9ab7-84c7f65b318f",
    "errorMessage": "Data integrity violation error. Please contact an administrator and quote '2e482454-5148-4bf4-9ab7-84c7f65b318f'"
}

Error Response 401:
- Code: 401 UNAUTHORIZED
  
  Content

{
    "timestamp": 1498176214518,
    "status": 401,
    "error": "Unauthorized",
    "message": "Full authentication is required to access this resource",
    "path": "/suburbs"
}

Sample Call:
```
POST /suburbs
```

    {
 		"name": "Warranwood",
  		"state": "VIC",
  		"postCode": "/postcodes/1"
    }