started great reshufle
Moved to using fire and an event from DOM4 (closes #126)
Moved serviceremoved, and serviceadded
Removed redefinition of DOM4 error types (closes #129)
Added Changes section and related text (closes #116)

Please note that tidy cleaned up some recent commits.
Merge branch 'gh-pages' into noLegacyStyle
Removed duplicate changes section
moved telephonycall interface outside CallHandler
Butchered the EventHandler definitions…
Tidy
tidy
continued reshufling

added text that device can have zero telephony services.
Merge pull request #138 from marcoscaceres/noLegacyStyle

some foundational changes to migrate to noLegacyStyle
Clarified relationship between telephony services and the user agent (closes #140)
Moved default telephony service into its own section
Changed text about exposing the protocol to be an issue.

See #125
moved TCallControl text to deal with it later
Renamed onservicechanged to ondefaultchanged (closes #100)
Moved activeCall attribute
moved the calls attribute