set version number for release candidate
added wsgiref to requires
include complete README as long_description for package
style: newline at end of file
docs: documented self-help commands e.g. ``ead-validate --help``
added argparse install requirement for Python < 2.7
bumped version number
updated README

 - add dependency links
 - latest release date
improve `ead-validate` for bulk use

 - Do not exit on first XML or DTD validation error
 - Log summary with number of EAD and DTD validation errors

closes #1
Merge branch 'release/1.0.0'
Merge tag '1.0.0' into develop

First full release
bumped version number