Add contribution guidelines
Add contribution guidelines


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