Hi, I was wondering how to update copyright info in a file header to reflect outside contributors' change.
More specifically, is it appropriate to add "Copyright 2016 The Apache Quickstep Contributors."? https://github.com/apache/incubator-quickstep/pull/27/files#diff-357f532831c389c757e7c87c7db1c4d3R4 Cheers, Zuyu
