Update Gemspec to list minimum Ruby req
Add event attributes as readers and HTML/Text attributes as objects

- New Attribute object to make working with the HTML/Text variations
  easier in the V3 API
- Added tests for all the attr's on event
Overly large update to add Objects for multi-level date

- Add Organizer, Venue, TicketClass
- Create DateTime objects for all dates (in either format)
- Add an attr_attrib and attr_date DSL for handling of attributes
- Add AttrAttribute for handling text/html combos for attributes
HoundCI Update and updates to TicketClass

- TicketClass dates now returned as DateTime
- attr_date now returns nil or DateTime in case of nil input
Update to change from Hash() to Hash#new() for implicit conversions
Add checks for nil values being passed when hashes expected

- Add test for venue with no address
- Add Hash checking for attr_attrib and attr_date
More HoundCI style updates
Removing unused private declaration
Merge pull request #2 from chrisradford/cr-event-attribs

Add all Event attributes as Objects