[BioRuby] adding a flatfile format

[Anoop Ranganath]

I'd like to add a simple flatfile format to use with bioruby.  In  
particular, I'm looking at BED files, which have a very simple tab  
delimited format.  I'm poking around in the code, and haven't been  
able to find a good example of how to incorporate a new parser.  I'm  
not so much interested in adding support for autodetection, so I  
can't imagine that it would be too difficult.

Does anyone have a starting point I can use?

Thanks,
Anoop