Added a newer, harder test file provided by elssar at https://github.com/mojombo/toml/commit/c5e370333af2541ba586fa717ee8b346ca9ea2ad

That led to the discovery that my output ToString() sort of sucks.  The reading/parsing looks to work, though.  More work to be done.
Redirected some output to the ITomlToken  interface and on my way to a saner ToString().
Cleaner namespace, and TomlDocument.ToString() works now.
Small tweaks before real refactoring and tests.
Tweaking stuff with README issues.

Signed-off-by: Richard Vasquez <github.com@callahansplace.org>
cleanup due to filename case on Windows.
Reset README.MD due to Windows filename case issues.