Adds notes for v1.1.x
Adds notes for v1.1.x

- it is now changed from getUsername to getDevUsername

[#134659931]

Signed-off-by: Brenda Chan <a73b4c8df187420e3fedfcd06e6a93288c7b6ac0@pivotal.io>

pivotal-cf/spring-cloud-gemfire-connector