Standalone Grok

Give to grok the ability to live, as a program or ??daemon??.
Must add
 * Command line parsing
   * something like `grok --file config.grok --as-daemon`
 * Grok configuration (Yalm file) define standard for 
  * location of the log - Read from file (at least at the beginning)
   * patterns - Load Grok pattern from somewhere
   * process - Actual grok routine
    * store - Save the output somewhere - HDFS, ES :)

I will try to also add some improvement to the speed