Added BSD notice to DNS stats example.
Added BSD notice to DNS stats example.

hanw/libtins,salessandri/libtins,UlfWetzker/libtins,mfontanini/libtins,salessandri/libtins,zmb3/libtins,rklabs/libtins,bowlofstew/libtins,UlfWetzker/libtins,wavelets/libtins,viveks9/decrypt80211,bowlofstew/libtins,capturePointer/libtins,wavelets/libtins,viveks9/decrypt80211,mfontanini/libtins,rklabs/libtins,capturePointer/libtins,hanw/libtins,zmb3/libtins