added reference to google group
added reference to google group

codeaudit/annoy,spotify/annoy,tjrileywisc/annoy,tjrileywisc/annoy,pombredanne/annoy,Houzz/annoy2,tjrileywisc/annoy,LongbinChen/annoy2,spotify/annoy,LongbinChen/annoy2,LongbinChen/annoy,subu-cliqz/annoy,Houzz/annoy2,pombredanne/annoy,subu-cliqz/annoy,subu-cliqz/annoy,aimeida/annoy,aimeida/annoy,guitarmind/annoy,eddelbuettel/annoy,spotify/annoy,pombredanne/annoy,codeaudit/annoy,BeifeiZhou/annoy,eddelbuettel/annoy,Houzz/annoy2,tjrileywisc/annoy,LongbinChen/annoy,LongbinChen/annoy,BeifeiZhou/annoy,spotify/annoy,guitarmind/annoy,aimeida/annoy,BeifeiZhou/annoy,guitarmind/annoy,pombredanne/annoy,LongbinChen/annoy2,subu-cliqz/annoy,eddelbuettel/annoy,codeaudit/annoy,eddelbuettel/annoy