no date parsers registered by default; add support for both US & non-US date formats
make zone a parameter; fix check for superclass of DateTime (was too general)
Merge pull request #27 from quantifind/date_parser_fix

no date parsers registered by default; add support for both US & non-US ...
version
add logo
README includes logo, version info, and links to wiki
fix typo
fix typo again
fix links
typo
Merge remote-tracking branch 'origin/master' into shortcuts