Timestamp documentation is not correct

[willie68]

The readme stated for the timestamp the following syntax:

{
  "operation": "timestamp",
  "timestamp[0]": {
    "inputFormat": "Mon Jan _2 15:04:05 -0700 2006",
    "outputFormat": "2006-01-02T15:04:05-0700"
  },
  "nowTimestamp": {
    "inputFormat": "$now",
    "outputFormat": "2006-01-02T15:04:05-0700"
  },
  "epochTimestamp": {
    "inputFormat": "2006-01-02T15:04:05-0700",
    "outputFormat": "$unix"
  }
}

but it should be

{
  "operation": "timestamp",
  "spec": {
    "timestamp[0]": {
      "inputFormat": "Mon Jan _2 15:04:05 -0700 2006",
      "outputFormat": "2006-01-02T15:04:05-0700"
    },
    "nowTimestamp": {
      "inputFormat": "$now",
      "outputFormat": "2006-01-02T15:04:05-0700"
    },
    "epochTimestamp": {
      "inputFormat": "2006-01-02T15:04:05-0700",
      "outputFormat": "$unix"
    }
  }
}