changes in examples - reflect new mailer api and mysql2 adapter
changes in examples - reflect new mailer api and mysql2 adapter

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lfassy/rails,illacceptanything/illacceptanything,voray/rails,sergey-alekseev/rails,untidy-hair/rails,EmmaB/rails-1,bolek/rails,prathamesh-sonpatki/rails,bogdanvlviv/rails,pvalena/rails,MSP-Greg/rails,deraru/rails,tijwelch/rails,amoody2108/TechForJustice,betesh/rails,elfassy/rails,utilum/rails,rbhitchcock/rails,mijoharas/rails,pvalena/rails,yasslab/railsguides.jp,yawboakye/rails,MSP-Greg/rails,arunagw/rails,travisofthenorth/rails,riseshia/railsguides.kr,Vasfed/rails,illacceptanything/illacceptanything,gcourtemanche/rails,bogdanvlviv/rails,georgeclaghorn/rails,sealocal/rails,alecspopa/rails,Vasfed/rails,printercu/rails,pvalena/rails,lcreid/rails,kachick/rails,tjschuck/rails,maicher/rails,amoody2108/TechForJustice,BlakeWilliams/rails,mijoharas/rails,kachick/rails,Edouard-chin/rails,mtsmfm/railstest,Edouard-chin/rails,assain/rails,EmmaB/rails-1,prathamesh-sonpatki/rails,Stellenticket/rails,yasslab/railsguides.jp,yawboakye/rails,ttanimichi/rails,gauravtiwari/rails,yalab/rails,alecspopa/rails,MichaelSp/rails,MichaelSp/rails,gauravtiwari/rails,mtsmfm/rails,palkan/rails,betesh/rails,samphilipd/rails,kamipo/rails,tjschuck/rails,ledestin/rails,yawboakye/rails,printercu/rails,flanger001/rails,mtsmfm/railstest,rossta/rails