Don't send empty splat to console.log.
Simplify class by moving all conversion work to the converter function.
Add markdown conversion option via pdc Pandoc module, including default options.
Update msg syntax for error.
Update argv usage. Refactor watch ability.
Show warning message when there is nothing to convert.

Update README usage.
Bump version. Now includes markdown conversion via pandoc.
Bump version to 0.1.2: Markdown conversion via pdc Pandoc module