Goban.config() should return config on no param
Deprecate Goban.getConfig(). Merged to Goban.config(). Test update.
Add david-dm.org badge.
ensure most falsy values are valid
Correct typos
Clean up
Opt for row/col convention instead of length/width since it's less ambiguous.
Only throw in synchronous functions. Refactor internal Goban.set().
Update goban.constructor tests for row/col convention
Update .gitignore to ignore .coveralls.yml
Typo fix + Goban.set(...) tests
Update .travis.yml and test script to hook with coveralls.io.
Fix indent