Removing the filtering options as they are taken care of in aila2-filter.
Formatting auto-correction (white space)
Implemented --stdin
    Added the help message needed
    Added the command line args handler
    Added processing for stdin
    Added line processing for stdin
Fixing a typo
Make aila2 handle stdin data if all provided command line args are valid. This allows aila2 to be invoked with 0 args and work from stdin.