adding conversions Goodie
dist.ini and removed old (no longer accurate) info tag
errors now return empty string per guidelines
re-worked to be more ddg-y
re-factored
re-factored conversions
[sig fig digits in answers], [no math on negative nums], [handle plural units], [handle multi-word units], [handle multiple factors]
handle plural units, general cleanup
Merge pull request #303 from elohmrow/conversions

Adding conversions Goodie