Add CONTRIBUTING.md with Typesafe Project & Developer Guidelines
Add CONTRIBUTING.md with Typesafe Project & Developer Guidelines

bmclane/slick,dotta/slick,Asamsig/slick,jkutner/slick,InsideVault/slick,marko-asplund/slick,xavier-fernandez/slick,knoldus/slick-1,trevorsibanda/slick,jkutner/slick,dvinokurov/slick,xavier-fernandez/slick,nmartynenko/slick,retronym/slick,seebcioo/slick,mustajarvi/slick,nremond/slick,adamkozuch/slick,lukasz-golebiewski/slick,AtkinsChang/slick,kwark/slick,easel/slick,olivergg/slick,lukasz-golebiewski/slick,InsideVault/slick,nmartynenko/slick,bmclane/slick,boldradius/slick,dotta/slick,nremond/slick,olivergg/slick,AtkinsChang/slick,nuodb/slick,Radsaggi/slick,knoldus/slick-1,mustajarvi/slick,nafg/slick,seebcioo/slick,adamkozuch/slick,xavier-fernandez/slick,nremond/slick,easel/slick,Radsaggi/slick,jamesward/slick