Adding an option to select the timezone.
Right now all the timezones are in the config because I coudln't
find any way to import the timezones.yml file in the config.
Using DateTimeZone::listIdentifiers() instead of a static list
of timezones.
Adding documentation for autocompletion in ide
Updating the tests to take the timezone into account.
addint tests on the getter and setter of timezone
Merge pull request #35 from mikeSimonson/master

Adding an option to select the timezone.