Set ruby >= 2.4.1 as min required version
Set ruby >= 2.4.1 as min required version

This matches Rails master, and it should make TravisCI green.

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