updating the readme with content clarifications
updating the readme with content clarifications

tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools,tg-msft/azure-sdk-tools