Differences between `foreman export supervisord` and `honcho export supervisord` about honcho

[msabramo]

Differences:

1. Foreman puts a newline at the beginning of the file, like honcho used to do, but this was removed in PR #96. This is a Foreman bug and I've created ddollar/foreman#503 for it. @ddollar just merged this so I'm going to put a line through this one.
2. Foreman names the program myapp-ansvc-1; Honcho uses myapp-ansvc (no number) and Foreman's numbering (used for program name and log files) starts at 1; Honcho's starts at 0. I've created PR #113 for this.
3. Honcho sticks a /bin/sh -c in front of the command. Not sure of rationale for this. I've addressed this with PR #110.
4. Foreman sets the user to the app name. Honcho uses my logged-in user name. I've created PR #111 for this.
5. Foreman tells the user what it's doing -- e.g.:
   [foreman export] writing: myapp.conf
   I've created PR #112 for this.

[nickstenning]

I think we've resolved most of the differences that are worth caring about now. Closing.