Is it really that much of an issue that someone responded to an old post? When investigating on the internet, it's sometimes invaluable to have recent updates on threads. Regardless of the fact that this particular response was completely useless.
For anyone else searching for a way to connect Bose Soundlink Mini II to AppleTV... the 4th Gen AppleTV supports bluetooth accessories, and should link to Bose speakers.
If you didn't necessarily need wireless connectivity you could also purchase a HDMI audio splitter which would provide an audio connection to plug directly into the Bose (or any other) system.
I hope that helps.