update license year in readme
update license year in readme

hoopla-software/refinerycms,kappiah/refinerycms,simi/refinerycms,mkaplan9/refinerycms,bricesanchez/refinerycms,mobilityhouse/refinerycms,chrise86/refinerycms,trevornez/refinerycms,anitagraham/refinerycms,chrise86/refinerycms,kelkoo-services/refinerycms,gwagener/refinerycms,stefanspicer/refinerycms,refinery/refinerycms,LytayTOUCH/refinerycms,johanb/refinerycms,aguzubiaga/refinerycms,trevornez/refinerycms,johanb/refinerycms,refinery/refinerycms,LytayTOUCH/refinerycms,bryanmtl/g-refinerycms,gwagener/refinerycms,mlinfoot/refinerycms,mlinfoot/refinerycms,simi/refinerycms,simi/refinerycms,mlinfoot/refinerycms,mobilityhouse/refinerycms,chrise86/refinerycms,bricesanchez/refinerycms,Eric-Guo/refinerycms,stefanspicer/refinerycms,stefanspicer/refinerycms,hoopla-software/refinerycms,kappiah/refinerycms,aguzubiaga/refinerycms,KingLemuel/refinerycms,mabras/refinerycms,aguzubiaga/refinerycms,mkaplan9/refinerycms,kappiah/refinerycms,KingLemuel/refinerycms,johanb/refinerycms,mkaplan9/refinerycms,LytayTOUCH/refinerycms,anitagraham/refinerycms,Retimont/refinerycms,mabras/refinerycms,Retimont/refinerycms,kelkoo-services/refinerycms,louim/refinerycms,Eric-Guo/refinerycms,Retimont/refinerycms,refinery/refinerycms,louim/refinerycms,gwagener/refinerycms,Eric-Guo/refinerycms,trevornez/refinerycms,bryanmtl/g-refinerycms,mabras/refinerycms,sideci-sample/sideci-sample-refinerycms,sideci-sample/sideci-sample-refinerycms,anitagraham/refinerycms,hoopla-software/refinerycms,KingLemuel/refinerycms,simi/refinerycms