Upgrade to Platform

Upgrade Mappings	Atrium	Platform
Accept header	application/vnd.mx.atrium.beta+json	application/vnd.mx.api.v1beta+json
Authentication headers	MX-API-Key: {api_key}	Authorization: Basic {token}
	MX-Client-ID: {client_id}	where token = Base64 encoding of {client_id}:{api_key}
Base URLs	Development:https://vestibule.mx.com	Development: https://int-api.mx.com
	Production: https://atrium.mx.com	Production: https://api.mx.com
Fetch Rewards Endpoint	POST /users/{user_guid}/members/{member_guid}/fetch_rewards	POST /users/{user_guid}/members/{member_guid}/fetch_rewards
List Rewards Endpoint	GET /users/{user_guid}/members/{member_guid}/rewards	GET /users/{user_guid}/members/{member_guid}/rewards
Read A Reward	GET /users/{user_guid}/members/{member_guid}/rewards/{reward_guid}	GET /users/{user_guid}/members/{member_guid}/rewards/{reward_guid}
Read a Credit Card Product	GET /credit_card_products/{credit_card_product_guid}	GET /credit_card_products/{credit_card_product_guid}
Read an Account	GET /users/{user_guid}/accounts/{account_guid}	GET /users/{user_guid}/accounts/{account_guid}