fix support for apps with default time_zone different than UTC
Let the start_date option override the params
Version bump
Merge pull request #69 from rogerio-augusto/custom_timezone_support

fix support for apps with default time_zone different than UTC
Version bump
Add screenshot to the readme
Now with :simple_calendar_range_time we can check for events with duration more than 1 day.
The :simple_calendar_range_time method returns a date range (starting_event..ending_event).
Missing 'end' statement. :-/
Some refactoring and comments addedd.

Aside comments and refactoring, method for range selection has been modified to :simple_calendar_range_date for clarity.
Add event scaffold example. Fixes #56
has_calendar updated to support old syntax (only starting date event) and new syntax ([stating_date, ending_date] array).
Documentation for events with starting and ending dates.