clarifying the comments regarding base_class declaration
clarifying the comments regarding base_class declaration

bolek/rails,esparta/rails,Edouard-chin/rails,tjschuck/rails,untidy-hair/rails,riseshia/railsguides.kr,eileencodes/rails,baerjam/rails,mtsmfm/rails,yawboakye/rails,tgxworld/rails,rossta/rails,gfvcastro/rails,kachick/rails,brchristian/rails,amoody2108/TechForJustice,vipulnsward/rails,Vasfed/rails,Stellenticket/rails,illacceptanything/illacceptanything,yalab/rails,starknx/rails,prathamesh-sonpatki/rails,arjes/rails,rails/rails,kamipo/rails,repinel/rails,Envek/rails,arunagw/rails,coreyward/rails,koic/rails,deraru/rails,odedniv/rails,Erol/rails,gcourtemanche/rails,deraru/rails,koic/rails,notapatch/rails,gfvcastro/rails,kenta-s/rails,mathieujobin/reduced-rails-for-travis,schuetzm/rails,bradleypriest/rails,yasslab/railsguides.jp,matrinox/rails,stefanmb/rails,tijwelch/rails,bogdanvlviv/rails,felipecvo/rails,shioyama/rails,MichaelSp/rails,Erol/rails,yalab/rails,arunagw/rails,deraru/rails,georgeclaghorn/rails,Vasfed/rails,fabianoleittes/rails,illacceptanything/illacceptanything,bradleypriest/rails,mtsmfm/railstest,tijwelch/rails,BlakeWilliams/rails,mohitnatoo/rails,maicher/rails,rails/rails,palkan/rails,illacceptanything/illacceptanything,brchristian/rails,flanger001/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,bogdanvlviv/rails,tjschuck/rails,kmcphillips/rails,utilum/rails,richseviora/rails,mijoharas/rails,elfassy/rails,esparta/rails,iainbeeston/rails,prathamesh-sonpatki/rails,richseviora/rails,assain/rails,kamipo/rails,illacceptanything/illacceptanything,yhirano55/rails,gauravtiwari/rails,flanger001/rails,stefanmb/rails,georgeclaghorn/rails,aditya-kapoor/rails,sealocal/rails,esparta/rails,Sen-Zhang/rails,vipulnsward/rails,jeremy/rails,pschambacher/rails,schuetzm/rails,illacceptanything/illacceptanything,flanger001/rails,ttanimichi/rails,sergey-alekseev/rails,richseviora/rails,samphilipd/rails,notapatch/rails,amoody2108/TechForJustice,fabianoleittes/rails,betesh/rails,Erol/rails,samphilipd/rails,travisofthenorth/rails,EmmaB/rails-1,illacceptanything/illacceptanything,notapatch/rails,iainbeeston/rails,riseshia/railsguides.kr,illacceptanything/illacceptanything,gauravtiwari/rails,kaspth/rails,yawboakye/rails,mtsmfm/railstest,rossta/rails,Spin42/rails,MichaelSp/rails,printercu/rails,pvalena/rails,vipulnsward/rails,bogdanvlviv/rails,tjschuck/rails,ngpestelos/rails,georgeclaghorn/rails,MSP-Greg/rails,iainbeeston/rails,xlymian/rails,shioyama/rails,felipecvo/rails,rails/rails,bolek/rails,pvalena/rails,EmmaB/rails-1,baerjam/rails,eileencodes/rails,voray/rails,eileencodes/rails,flanger001/rails,prathamesh-sonpatki/rails,Spin42/rails,Edouard-chin/rails,rails/rails,illacceptanything/illacceptanything,arunagw/rails,gauravtiwari/rails,yasslab/railsguides.jp,EmmaB/rails-1,tijwelch/rails,kddeisz/rails,shioyama/rails,gavingmiller/rails,mechanicles/rails,Stellenticket/rails,lcreid/rails,MichaelSp/rails,arunagw/rails,kddeisz/rails,brchristian/rails,BlakeWilliams/rails,printercu/rails,gavingmiller/rails,aditya-kapoor/rails,mtsmfm/railstest,yahonda/rails,yasslab/railsguides.jp,jeremy/rails,illacceptanything/illacceptanything,bradleypriest/rails,gfvcastro/rails,Edouard-chin/rails,shioyama/rails,jeremy/rails,travisofthenorth/rails,untidy-hair/rails,koic/rails,kirs/rails-1,Vasfed/rails,mtsmfm/rails,yawboakye/rails,mijoharas/rails,utilum/rails,iainbeeston/rails,bogdanvlviv/rails,illacceptanything/illacceptanything,yalab/rails,odedniv/rails,alecspopa/rails,maicher/rails,kmayer/rails,jeremy/rails,ledestin/rails,lcreid/rails,MSP-Greg/rails,kamipo/rails,rafaelfranca/omg-rails,mohitnatoo/rails,odedniv/rails,mathieujobin/reduced-rails-for-travis,ledestin/rails,coreyward/rails,xlymian/rails,mtsmfm/rails,kirs/rails-1,bolek/rails,printercu/rails,repinel/rails,alecspopa/rails,marklocklear/rails,starknx/rails,aditya-kapoor/rails,baerjam/rails,rbhitchcock/rails,schuetzm/rails,Stellenticket/rails,Sen-Zhang/rails,rbhitchcock/rails,MSP-Greg/rails,kenta-s/rails,MSP-Greg/rails,fabianoleittes/rails,mechanicles/rails,pvalena/rails,repinel/rails,vassilevsky/rails,Envek/rails,illacceptanything/illacceptanything,tjschuck/rails,hanystudy/rails,gcourtemanche/rails,ttanimichi/rails,Stellenticket/rails,BlakeWilliams/rails,untidy-hair/rails,assain/rails,ngpestelos/rails,Erol/rails,assain/rails,voray/rails,pschambacher/rails,utilum/rails,repinel/rails,palkan/rails,betesh/rails,sergey-alekseev/rails,palkan/rails,coreyward/rails,88rabbit/newRails,prathamesh-sonpatki/rails,sealocal/rails,deraru/rails,rbhitchcock/rails,hanystudy/rails,alecspopa/rails,elfassy/rails,kddeisz/rails,yasslab/railsguides.jp,samphilipd/rails,rafaelfranca/omg-rails,baerjam/rails,Edouard-chin/rails,pschambacher/rails,kmcphillips/rails,joonyou/rails,kddeisz/rails,88rabbit/newRails,matrinox/rails,BlakeWilliams/rails,schuetzm/rails,mechanicles/rails,yahonda/rails,kirs/rails-1,xlymian/rails,printercu/rails,yawboakye/rails,untidy-hair/rails,pvalena/rails,marklocklear/rails,lucasmazza/rails,yahonda/rails,riseshia/railsguides.kr,voray/rails,amoody2108/TechForJustice,elfassy/rails,88rabbit/newRails,betesh/rails,lcreid/rails,joonyou/rails,mijoharas/rails,aditya-kapoor/rails,gcourtemanche/rails,lucasmazza/rails,eileencodes/rails,lcreid/rails,fabianoleittes/rails,palkan/rails,travisofthenorth/rails,rafaelfranca/omg-rails,Spin42/rails,kmcphillips/rails,joonyou/rails,arjes/rails,stefanmb/rails,kmayer/rails,tgxworld/rails,maicher/rails,kmayer/rails,yhirano55/rails,kaspth/rails,yhirano55/rails,mechanicles/rails,vassilevsky/rails,tgxworld/rails,joonyou/rails,mohitnatoo/rails,lucasmazza/rails,gfvcastro/rails,tgxworld/rails,assain/rails,illacceptanything/illacceptanything,Envek/rails,utilum/rails,sealocal/rails,mathieujobin/reduced-rails-for-travis,sergey-alekseev/rails,illacceptanything/illacceptanything,georgeclaghorn/rails,rossta/rails,kachick/rails,Envek/rails,Sen-Zhang/rails,ledestin/rails,Vasfed/rails,vipulnsward/rails,kachick/rails,mohitnatoo/rails,hanystudy/rails,yalab/rails,ngpestelos/rails,yhirano55/rails,arjes/rails,felipecvo/rails,travisofthenorth/rails,kaspth/rails,vassilevsky/rails,yahonda/rails,ttanimichi/rails,starknx/rails,gavingmiller/rails,kmcphillips/rails,marklocklear/rails,matrinox/rails,kenta-s/rails,esparta/rails,riseshia/railsguides.kr,notapatch/rails,betesh/rails