Added contributing and license information.
Added contributing and license information.

UnbelievablyRitchie/cake,phrusher/cake,UnbelievablyRitchie/cake,yvschmid/cake,jrnail23/cake,devlead/cake,adamhathcock/cake,devlead/cake,cake-build/cake,mholo65/cake,Invenietis/cake,michael-wolfenden/cake,robgha01/cake,wallymathieu/cake,danielrozo/cake,manekovskiy/cake,andycmaj/cake,vlesierse/cake,RichiCoder1/cake,Sam13/cake,phrusher/cake,adamhathcock/cake,patriksvensson/cake,RichiCoder1/cake,andycmaj/cake,RehanSaeed/cake,RehanSaeed/cake,ferventcoder/cake,patriksvensson/cake,michael-wolfenden/cake,vlesierse/cake,SharpeRAD/Cake,daveaglick/cake,thomaslevesque/cake,marcosnz/cake,ferventcoder/cake,Julien-Mialon/cake,thomaslevesque/cake,Invenietis/cake,mholo65/cake,robgha01/cake,yvschmid/cake,gep13/cake,Julien-Mialon/cake,danielrozo/cake,Sam13/cake,cake-build/cake,jrnail23/cake,phenixdotnet/cake,phenixdotnet/cake,os-alan/cake,gep13/cake,SharpeRAD/Cake,daveaglick/cake,marcosnz/cake,DavidDeSloovere/cake,DixonD-git/cake