add stub top-level ./tests/ directory

- placeholder for test suite integration
cleanup .gitignore

- integrate cleaner cookiecutter defaults for .gitignore
add .travis.yml
update MANIFEST.in to include pertinent content

- MANIFEST.in should now include sufficient data for a proper
  source distribution
remove image dependency in README.rst

- previously used the dbsake logo.  now using a simple utf-8
  kanji character instead so we don't have to deal with pathing
  issues in sphinx.