Extend the newer CordovaPlugin class rather than the deprecated Plugin class (it appears this class is removed altogether in the Cordova 2.7.0 source).
Merge pull request #1112 from jwark/remove_plugin_deprecations

Fix Android SoftKeyboard & DatePicker Plugin deprecations
Slight corrections on DatePickerPlugin readme
Merge pull request #1118 from mbillau/DatePickerReadme

Slight corrections on DatePickerPlugin readme