Add more stream examples
Add more stream examples

wenzhucjy/java8-tutorial,rguner/java8-tutorial,mygithubwork/java8-tutorial,mygithubwork/java8-tutorial,clementinexin/java8-tutorial,winterbe/java8-tutorial,nenahov/java8-tutorial,jan-peremsky/java8-tutorial,houssoli/java8-tutorial,moqiguzhu/java8-tutorial,rbible/java8-tutorial,jan-peremsky/java8-tutorial,clementinexin/java8-tutorial,grijeshsaini/java8-tutorial,grijeshsaini/java8-tutorial,Krasnyanskiy/java8-tutorial,houssoli/java8-tutorial,saikrishna-kishore/java8-tutorial,isigma/java8-tutorial,LetItRock/java8-tutorial,katielkwood/test,wenzhucjy/java8-tutorial,rguner/java8-tutorial,moqiguzhu/java8-tutorial,saikrishna-kishore/java8-tutorial,nenahov/java8-tutorial,Krasnyanskiy/java8-tutorial,DrFretNot/test,rbible/java8-tutorial,katielkwood/test,wangtaicheng/java8-tutorial,LetItRock/java8-tutorial,winterbe/java8-tutorial,wangtaicheng/java8-tutorial,DrFretNot/test,isigma/java8-tutorial