Add health APIs

1.8.2

Adding the health APIs to the SDK

Covered all the Friends service APIs

Merge pull request #8 from hub/feature/friend-service

Feature : Friend service APIs exposed

1.8.0: Merge pull request #7 from hub/feature/inventory-service

Added

• Pavilion service
• Marketplace inventory service

refresh token fix

1.7.4

Fixed the refresh token retrieval