delete parser.rst
pass dialect through from create_db to iterators to *Creator classes
docs
example file for tests
Merge pull request #16 from yarden/cli-dev

cli-dev merge with refactor branch
remove import of obsolete modules
pep8
reformat gffwriter docs to match numpydoc conventions
be more flexible with output filenames
fix bug that added spurious 'Parent' attribute when updating
use "order_by" kwarg to sort output
GFFWriter docstring, and include gffutils version in header
pass verbose kwarg from FeatureDB.update
add merge_strategy 'replace'
improve test.test_update
additions to test_update
Adding rmdups to gffutils-cli: removing duplicates from GFF/GTF files
conflict resolved