add .checkstyle files to the gitignore list of ignored files
add .checkstyle files to the gitignore list of ignored files

krismcqueen/gateway,AdrianCozma/gateway,vmaraloiu/gateway,mgherghe/gateway,danibusu/gateway,justinma246/gateway,jitsni/gateway,Anisotrop/gateway,irina-mitrea-luxoft/gateway,jfallows/gateway,vmaraloiu/gateway,DoruM/gateway,danibusu/gateway,nemigaservices/gateway,adrian-galbenus/gateway,justinma246/gateway,cmebarrow/gateway,michaelcretzman/gateway,justinma246/gateway,DoruM/gateway,sanjay-saxena/gateway,irina-mitrea-luxoft/gateway,EArdeleanu/gateway,adrian-galbenus/gateway,nemigaservices/gateway,mgherghe/gateway,kaazing-build/gateway,biddyweb/gateway,EArdeleanu/gateway,dpwspoon/gateway,a-zuckut/gateway,veschup/gateway,jitsni/gateway,cmebarrow/gateway,chao-sun-kaazing/gateway,biddyweb/gateway,Anisotrop/gateway,Anisotrop/gateway,adrian-galbenus/gateway,kaazing-build/gateway,adrian-galbenus/gateway,vmaraloiu/gateway,cmebarrow/gateway,EArdeleanu/gateway,kaazing-build/gateway,a-zuckut/gateway,dpwspoon/gateway,krismcqueen/gateway,michaelcretzman/gateway,stanculescu/gateway,mjolie/gateway,jitsni/gateway,a-zuckut/gateway,nemigaservices/gateway,jitsni/gateway,danibusu/gateway,krismcqueen/gateway,dpwspoon/gateway,mjolie/gateway,kaazing/gateway,mgherghe/gateway,sanjay-saxena/gateway,vmaraloiu/gateway,DoruM/gateway,mjolie/gateway,jfallows/gateway,stanculescu/gateway,justinma246/gateway,DoruM/gateway,chao-sun-kaazing/gateway,biddyweb/gateway,irina-mitrea-luxoft/gateway,sanjay-saxena/gateway,veschup/gateway,michaelcretzman/gateway,veschup/gateway,michaelcretzman/gateway,kaazing-build/gateway,danibusu/gateway,irina-mitrea-luxoft/gateway,jfallows/gateway,AdrianCozma/gateway,kaazing/gateway,a-zuckut/gateway,veschup/gateway,stanculescu/gateway,kaazing/gateway,EArdeleanu/gateway,AdrianCozma/gateway,Anisotrop/gateway,stanculescu/gateway,biddyweb/gateway,chao-sun-kaazing/gateway,kaazing/gateway,sanjay-saxena/gateway,chao-sun-kaazing/gateway,jfallows/gateway,mgherghe/gateway,mjolie/gateway,dpwspoon/gateway,cmebarrow/gateway,krismcqueen/gateway,nemigaservices/gateway,AdrianCozma/gateway