Merge pull request #4 from apache/master

Merge Apache
adding search request source as JSON field in configuration
better debug logging
resolves STREAMS-116
adding README
bootstrap of module
Merge pull request #5 from apache/master

Merge From Apache
STREAMS-105 | Ensured that the user_mentions entries are correctly structured and that the activity object has the correct ID and content
STREAMS-105 | Code review feedback
STREAMS-105 | Code review feedback
Added mapping:
Adding MUP source
Merge pull request #6 from apache/master

Merge Apache
Merge branch 'instagram' into STREAMS-122
STREAMS-122 | Updated the InstagramActivityUtil class to fully map Instagram MediaFeedData objects to Activities. Updated tests so that this deserialization and mapping can be tested
STREAMS-105 | Code review feedback
Removed StreamsDatumCountable from procesor and added twitter specific link extraction.
STREAMS-105 | Updated the InstagramTypeConverter to use the conversion utility functions provided in InstagramActivityUtil
Merge branch 'master' into instagram
Merge branch 'instagram' into STREAMS-122
STREAMS-122 | Added header