Add dir column by default on "forever list"

[adelriosantiago]

This adds the "dir" column by default when issuing the "forever list" command. It is the only field that can help the user to determine which PID is running but it is hidden by default!

I know that it is possible to add an UID, however if the UID is added to the start command in the package.json then it will be commited in GIT, thus not allowing the user to know if is a dev or a prod deployment.

[adelriosantiago]

Example with a common package.json:

  "scripts": {
    "start": "forever --verbose --uid \"node-app\" --watch --watchDirectory ./routes ./bin/www",
    "dev": "nodemon -e ejs,js --debug ./bin/www"
  },

Since package.json is usually commited and the UID can't be set through an ENV variable (or I least I haven't found how) if there are two apps, dev and prod they will both share the same UID.