Add informations about JSON file content

Fail2ban action script to stock banned IP in a JSON file
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This script is design to be use as action script for fail2ban.

Installation
------------

 - Put action.d/jsonfile.conf in /etc/fail2ban/action.d
 - Put bin/fail2ban-jsonfile in /usr/local/bin/fail2ban-jsonfile

Configuration
-------------

Jail example :

  [myapp]
  enabled  = true
  filter   = myapp
  action   = jsonfile[jsonpath=/var/tmp/myapp-banned-ip.json]
  logpath  = /var/log/myapp.log

Parameters :

 - bin :
   Specify the path to fail2ban-jsonfile script
   Default : /usr/local/bin/fail2ban-jsonfile

 - jsonpath :
   The path of JSON file
   Default : /tmp/fail2ban-jsonfile.json

 - umask :
   Umask use on JSON file creation (Integer)
   Default : 0077