removes bindir from the rails gemspec
removes bindir from the rails gemspec

Nowadays the rails gem itself has no executables.

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