Update URLs in RELEASING_RAILS.md [ci skip]
Update URLs in RELEASING_RAILS.md [ci skip]

* Use https instead of http with URI scheme for Travis
* Update Url for "Agile Web Development with Rails"

bogdanvlviv/rails,lcreid/rails,untidy-hair/rails,rafaelfranca/omg-rails,georgeclaghorn/rails,EmmaB/rails-1,gauravtiwari/rails,shioyama/rails,starknx/rails,travisofthenorth/rails,yhirano55/rails,esparta/rails,repinel/rails,prathamesh-sonpatki/rails,esparta/rails,MSP-Greg/rails,georgeclaghorn/rails,iainbeeston/rails,kmcphillips/rails,joonyou/rails,mohitnatoo/rails,joonyou/rails,mechanicles/rails,illacceptanything/illacceptanything,utilum/rails,yalab/rails,baerjam/rails,travisofthenorth/rails,illacceptanything/illacceptanything,aditya-kapoor/rails,Envek/rails,assain/rails,aditya-kapoor/rails,yalab/rails,prathamesh-sonpatki/rails,arunagw/rails,MSP-Greg/rails,palkan/rails,rails/rails,kmcphillips/rails,bogdanvlviv/rails,palkan/rails,kmcphillips/rails,deraru/rails,palkan/rails,georgeclaghorn/rails,mohitnatoo/rails,BlakeWilliams/rails,baerjam/rails,aditya-kapoor/rails,BlakeWilliams/rails,esparta/rails,tgxworld/rails,joonyou/rails,gauravtiwari/rails,repinel/rails,betesh/rails,kddeisz/rails,notapatch/rails,betesh/rails,georgeclaghorn/rails,Vasfed/rails,Edouard-chin/rails,yawboakye/rails,lcreid/rails,rails/rails,prathamesh-sonpatki/rails,betesh/rails,rafaelfranca/omg-rails,tgxworld/rails,yahonda/rails,Vasfed/rails,assain/rails,baerjam/rails,Envek/rails,printercu/rails,fabianoleittes/rails,gauravtiwari/rails,Erol/rails,schuetzm/rails,vipulnsward/rails,assain/rails,mohitnatoo/rails,iainbeeston/rails,yawboakye/rails,jeremy/rails,yawboakye/rails,Stellenticket/rails,tjschuck/rails,utilum/rails,yhirano55/rails,Edouard-chin/rails,schuetzm/rails,yahonda/rails,tjschuck/rails,eileencodes/rails,esparta/rails,vipulnsward/rails,printercu/rails,baerjam/rails,illacceptanything/illacceptanything,repinel/rails,Erol/rails,illacceptanything/illacceptanything,starknx/rails,rafaelfranca/omg-rails,Envek/rails,aditya-kapoor/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,repinel/rails,BlakeWilliams/rails,shioyama/rails,Edouard-chin/rails,tgxworld/rails,shioyama/rails,MSP-Greg/rails,notapatch/rails,jeremy/rails,eileencodes/rails,tjschuck/rails,yhirano55/rails,pvalena/rails,yawboakye/rails,bogdanvlviv/rails,yahonda/rails,Vasfed/rails,rails/rails,flanger001/rails,illacceptanything/illacceptanything,iainbeeston/rails,illacceptanything/illacceptanything,Edouard-chin/rails,pvalena/rails,jeremy/rails,schuetzm/rails,printercu/rails,mechanicles/rails,flanger001/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,Stellenticket/rails,Vasfed/rails,travisofthenorth/rails,rails/rails,flanger001/rails,kmcphillips/rails,yalab/rails,printercu/rails,vipulnsward/rails,Envek/rails,jeremy/rails,illacceptanything/illacceptanything,iainbeeston/rails,untidy-hair/rails,deraru/rails,travisofthenorth/rails,untidy-hair/rails,prathamesh-sonpatki/rails,arunagw/rails,tjschuck/rails,eileencodes/rails,deraru/rails,utilum/rails,kddeisz/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,Stellenticket/rails,mechanicles/rails,illacceptanything/illacceptanything,mohitnatoo/rails,flanger001/rails,kddeisz/rails,schuetzm/rails,fabianoleittes/rails,MSP-Greg/rails,notapatch/rails,vipulnsward/rails,illacceptanything/illacceptanything,untidy-hair/rails,eileencodes/rails,EmmaB/rails-1,notapatch/rails,yalab/rails,deraru/rails,Erol/rails,fabianoleittes/rails,tgxworld/rails,kddeisz/rails,arunagw/rails,yahonda/rails,joonyou/rails,bogdanvlviv/rails,lcreid/rails,starknx/rails,lcreid/rails,betesh/rails,pvalena/rails,fabianoleittes/rails,yhirano55/rails,arunagw/rails,BlakeWilliams/rails,pvalena/rails,palkan/rails,utilum/rails,mechanicles/rails,Erol/rails,shioyama/rails,EmmaB/rails-1,assain/rails,Stellenticket/rails