Link to updated instructions in README
Link to updated instructions in README

Fixes https://github.com/thoughtbot/griddler/issues/204

thoughtbot/griddler,joeadcock/griddler,vahtel/griddler,muthhus/griddler,joeadcock/griddler,muthhus/griddler,r38y/griddler,joeadcock/griddler,thoughtbot/griddler,r38y/griddler,firepoint/griddler,wingrunr21/griddler,danavery/griddler,danavery/griddler,danavery/griddler,pipefy/griddler,pipefy/griddler,ValiMail/griddler,ValiMail/griddler,vahtel/griddler,RubyDaily/griddler,muthhus/griddler,RubyDaily/griddler,r38y/griddler,ValiMail/griddler,Inchdev/griddler,wingrunr21/griddler,firepoint/griddler,Inchdev/griddler,seanscal/griddler,vahtel/griddler,thoughtbot/griddler,Inchdev/griddler,pipefy/griddler,seanscal/griddler,RubyDaily/griddler,firepoint/griddler,seanscal/griddler,wingrunr21/griddler