Distributed System Assignment 2
Teamname:Evagelion CODE TODO: 1: 命令行输入Manager-CreateRegistry(port); 2: 命令行输入User-GetRegistry(hostname, port) 2.5: 输入ip address 3: 命令行输入username 4：更改所有跟getRegistry相关的方法，因为都要getRegistry（xxxx）[drawlistener, picthub]
4:import picture选取用户输入的picture+完善的exception handling 5:new要弹框提示要不要save
5：11周末之前写完report