Merge pull request #1 from twitter/develop

Merge from twitter/scalding
add partition method
add test
change deps to https
fix comment
add https in plugins.sbt
undo https for some deps
more https dance
Merge pull request #2 from twitter/develop

Merge from twitter/scalding
Merge branch 'develop' into typedpipe_partition
Merge pull request #987 from rubanm/typedpipe_partition

Typedpipe partition