Fix Outdated Copyright Year
Fix Outdated Copyright Year

Fix outdated copyright year (update to 2015)
The copyright year was out of date. Copyright notices must reflect the current year. This commit updates the listed year to 2015.
dokkis/restangular,aychando/restangular,yelmontaser/restangular,CandyLee198088/restangular,xuwupeng2000/restangular,arabianfoz/restangular,chacbumbum/restangular,rodrigomf24/restangular,ackimwilliams/restangular,sergiocruz/restangular,dshefchik/restangular,zhengcongzhen/restangular,cruiser/restangular,hansottowirtz/restangular,bartzilla/restangular,kevinrenskers/restangular,fernandomoraes/restangular,dankahle/restangular,janeyhjy/restangular,mrahhal/restangular,scalp42/restangular,hartz89/restangular,mgonto/restangular,matiomlei/restangular-1,facingsouth/restangular,duxet/restangular,idpaterson/restangular,marciocamello/restangular,jsdevel/restangular,sesubash/restangular,Nihaux/restangular