fixes to get streams-examples working
Merge branch 'streamstutorial' of https://git-wip-us.apache.org/repos/asf/incubator-streams into streamstutorial

Conflicts:
	streams-contrib/streams-persist-elasticsearch/src/main/java/org/apache/streams/elasticsearch/ElasticsearchPersistWriter.java
	streams-contrib/streams-provider-twitter/src/main/java/org/apache/streams/twitter/provider/TwitterTimelineProvider.java