updated VENDORS for 2.8.1
updated VENDORS for 2.8.1

ovelasquez/ussi,havvg/symfony-standard-propel,havvg/symfony-propel-edition,Cartesia/01,symfony/symfony-standard,stof/symfony-standard,lyrixx/symfony-standard,ovelasquez/ussi,shamcode/symfony-testing,WolfMicrosystems/symfony-wms,trsteel88/symfony-standard,egeloen/symfony-standard,the-software-factory/superhero-api,simonjcarr/symfony_rest,taylankasap/symfony-standard,umpirsky/symfony-standard,havvg/symfony-propel-edition,simonjcarr/symfony_rest,kmelia/fresh-symfony,symfony/symfony-standard,black-project/black-standard,GulDmitry/music-diff,uttam-vi/pardawala,ovelasquez/ussi,GulDmitry/music-diff,uttam-vi/pardawala,formapro-forks/api-basic,trsteel88/symfony-standard,proteichik/testApp,Spea/symfony-standard,propelorm/symfony-propel-edition,SymfonyId/Skeleton,gencer/symfony-standard,stof/symfony-standard,GulDmitry/music-diff,symfony-cmf/standard-edition,Tobion/symfony-standard,Cartesia/01,kmelia/fresh-symfony,propelorm/symfony-propel-edition,Spea/symfony-standard,umpirsky/symfony-standard,gencer/symfony-standard,vincentaubert/symfony-standard,debruyne0/symfony,egeloen/symfony-standard,vincentaubert/symfony-standard,havvg/symfony-standard-propel,kmelia/fresh-symfony,jakzal/symfony-standard,fabpot/symfony-standard,debruyne0/symfony,WolfMicrosystems/symfony-wms,black-project/black-standard,fabpot/symfony-standard,uttam-vi/pardawala,symfony-cmf/standard-edition,formapro-forks/api-basic,the-software-factory/superhero-api,shamcode/symfony-testing,apnet/symfony-standard-edition,SymfonyId/Skeleton,GulDmitry/music-diff,Cartesia/01,Tobion/symfony-standard,taylankasap/symfony-standard,dunglas/symfony-standard,dunglas/symfony-standard,apnet/symfony-standard-edition,jakzal/symfony-standard,proteichik/testApp,apnet/symfony-standard-edition,lyrixx/symfony-standard