added a warning for obsolete sorcery:bootstrap (partial merge of pull request #315)
added a warning for obsolete sorcery:bootstrap (partial merge of pull request #315)

Sorcery/sorcery,webgago/sorcery,jerefrer/sorcery,rubenmoya/sorcery,wendy0402/sorcery,jshum/sorcery,athix/sorcery,athix/sorcery,creepycheese/sorcery,ikhakoo/sorcery,NoamB/sorcery,ikhakoo/sorcery,wasabia/bnbtripSorcery,Sorcery/sorcery,athix/sorcery,creepycheese/sorcery,wasabia/bnbtripSorcery,Sology/sorcery,Sorcery/sorcery,Borzik/sorcery,alexanderedge/sorcery,Borzik/sorcery,kristianmandrup/sorcery,webgago/sorcery,rubenmoya/sorcery,trustyknave/sorcery,wendy0402/sorcery,kristianmandrup/sorcery,NoamB/sorcery,jshum/sorcery,Sology/sorcery,alexanderedge/sorcery,trustyknave/sorcery,jerefrer/sorcery