Request Service API notice for VC-SDK

[jcruiz]

Problem: We need to notify our customers of the new Request Service API

Solution: Update readme file

Validation: none.

Type of change:

• [ ] Feature work
• [ ] Bug fix
• [X] Documentation
• [ ] Engineering change
• [ ] Test
• [ ] Logging/Telemetry

Risk:

• [ ] High – Errors could cause MAJOR regression of many scenarios. (Example: new large features or high level infrastructure changes)
• [ ] Medium – Errors could cause regression of 1 or more scenarios. (Example: somewhat complex bug fixes, small new features)
• [X] Small – No issues are expected. (Example: Very small bug fixes, string changes, or configuration settings changes)