Tools for extracting reads by coverage

See https://github.com/ctb/khmer-recipes/blob/master/001-extract-reads-by-coverage/index.rst

On Mon, Sep 01, 2014 at 05:03:34AM -0700, Michael R. Crusoe wrote:
> > @@ -0,0 +1,64 @@
> > +#! /usr/bin/env python
> > +import argparse
> > +import screed
> > +import sys
> > +import khmer
> > +
> > +def output_single(read):
> 
> As before, move to screed or khmer.utils please :-)

Issue discussed in #328.
-- 
C. Titus Brown, ctb@msu.edu