Update offlineCapturer.java

Replaced Log Generator class with one I was working on.

*still needs tabs replaced with dashes for mandatory fields.
*when reading the log file, how do we tell if a space used to be a tab (if replaced)?
*RFC 6873 examples shows the BEB as "00", this is not 0x01 or 0x00, nor is it 1 byte as specified. ??