add package remote that is used RMI
modified PropFile and make controller package
introduce interface and implemented SystemController
implemented until Parser
implemented send
bug fixed
bug fixed
implemented sendmail that can choose concrete class
delete not used class and modified somewhere
Merge pull request #11 from MattsThat/fixMethodAndPackage

Fix method and package
Introduce ExecutorService and log property files change
Merge pull request #12 from MattsThat/changeThread2Executor

Introduce ExecutorService and log property files change