Goodies: Adding empty documentation for helpers
goodie_helpers.pm: fleshing out numbers
goodie_helpers.pm: fleshing out dates
goodie_helpers.pm: fleshing out html_enc

@mwmiller does this tally with the PR?
goodie_helpers.pm: Adding example of parse_all_strings_to_date
goodie_helpers.pm: Adding example of number_style_for with array
goodie_helpers: Explicitly stating its a DateTime
goodie_helpers: minor cleanup & de-duplication
goodie_helpers: Fixes from @moollaza
Merge pull request #102 from mintsoft/master

Goodies: Adding documentation for roles & helpers