Don't clone records for text files
Deprecate rather than remove old combineValuesByKey function
Adding fix covering combineCombinersByKey as well
Style fix
Add GraphX dependency to examples/pom.xml
Merge pull request #427 from pwendell/deprecate-aggregator

Deprecate rather than remove old combineValuesByKey function
Merge pull request #429 from ankurdave/graphx-examples-pom.xml

Add GraphX dependency to examples/pom.xml
Merge pull request #428 from pwendell/writeable-objects

Don't clone records for text files