Add Slade public email address.
Merge pull request #3 from d2rk/update-contributors-list

Update contributors list
Provide the support to restart processes. Implement restartProcess and restartProcessGroup methods. Implement sendSignal method that allows to send signals to the process. Thus we can send HUP signal to the daemon process in order to restart them.
Add the test for Process.sendSignal method.
Allow process manipulator to restart processes.