handle SIGINT, EPIPE
handle SIGINT, EPIPE

We don't want no stack traces

  - INT handles `Ctrl-C` from the command-line
  - EPIPE is raised when the program that is accepting output closed its
    input before our program has finished.

toupeira/ripper-tags,yasuoza/ripper-tags,tmm1/ripper-tags,tmm1/ripper-tags