Make `status` with no args work
Make `status` with no args work

Looks like this:

    [marca@marca-mac2 plunchy]$ plunchy status
    -       0       net.tunnelblick.tunnelblick.LaunchAtLogin
    -       0       homebrew.mxcl.redis
    -       1       homebrew.mxcl.postgresql
    22381   -       homebrew.mxcl.mysql
    22382   -       homebrew.mxcl.mongodb
    22384   -       homebrew.mxcl.elasticsearch

    [marca@marca-mac2 plunchy]$ plunchy status mongo
    22382   -       homebrew.mxcl.mongodb

Closes #4

epochblue/plunchy