Update release notes
Update release notes

Change-Id: If56d1d2aab30bccfad48514d2ab8b3e5d0ed9d5b

rameshvoltella/digits-android,metao1/digits-android,twitter/digits-android,jaydeep17/digits-android,jaydeep17/digits-android,dejavu1988/digits-android,twitter/digits-android,rameshvoltella/digits-android,metao1/digits-android,dejavu1988/digits-android