kesla/node-headless — pull request #9 by feross (2013-07-13 07:00:07+00:00)
Title: allow Xvfb child process to be killed

Remove the "exit" handler event when Xvfb has successfully started
up. Otherwise, it is impossible to kill the Xvfb process with
`childProcess.kill()` since it will just get restarted by the
"exit" event handler.