Fix references in example apps.
Remove api key from manifests.
Refactor the OnSurveyCompletedListener to be OnSurveyFinishedListener, and pass a boolean indicating completed/skipped to the listener method.
Merge branch 'message_center_v2' of git://github.com/skykelsey/apptentive-android

Conflicts:
	apptentive-android-sdk/src/com/apptentive/android/sdk/SurveyModule.java
	apptentive-android-sdk/src/com/apptentive/android/sdk/module/survey/OnSurveyFinishedListener.java