Add license file (BSD) according to Google guidelines

BUG: 24459597

Change-Id: I7af577eecc9021a47acefeeff7e3d4879d9f280b
Reviewed-on: https://weave-review.googlesource.com/1175
Reviewed-by: Vitaly Buka <vitalybuka@google.com>
1 file changed
tree: dbc82ef37caed8488101e517518969d27e97d866
  1. libweave/