Checkpoint offset for kafka consumer
Merge branch 'master' of github.com:DataTorrent/Malhar
merge pom.xml
Merge branch 'master' of github.com:DataTorrent/Malhar
fixed a typo and reorganized imports.
Merge branch 'master' of github.com:DataTorrent/Malhar
removed misleading comment.
Merge pull request #246 from 243826/master

Documentation had a typo which was repeated. I fixed it and also reorganized imports.
Merge pull request #149 from siyuanh/master

Checkpoint consumer offset  #146
Merge branch 'master' into 0.9-migration