Option for adding timezone offset to initial date

Per http://stackoverflow.com/questions/2587345/javascript-date-parse
the format "2014-11-14T00:00:00Z" parses the same way across browsers.

After using parse to get the milliseconds for a time we can add the
offset for the browser to ensure that the date displayed reflects
the date provided as an initial value.
Merge pull request #7 from chriserin/timezone-offset

Option for adding timezone offset to initial date