Updated guide, adding to the conditions section mostly.
Updated guide, adding to the conditions section mostly.

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