Exchange basic usage

exchange_usage.rb

credentials = Autodiscover::Credentials.new('<e-mail address>', '<password>')
client = Autodiscover::Client.new
services = client.get_services(credentials)
ews_url = services.ews_url

Viewpoint::EWS::EWS.endpoint = ews_url
Viewpoint::EWS::EWS.set_auth 'username','password'

#believe this fetches the primary calendar. Still need to figure out how to get the list of all calendars.
calendar = Viewpoint::EWS::Folder.get_folder(:calendar)

items = calendar.items_between(DateTime.now.xmlschema, 1.week.from_now.xmlschema)