Release entries for 0.9.1
Merge branch 'release/0.9.1' into develop
Merge pull request #18 from twitter/develop

Merge from twitter/storehaus
use https for sonatype repo
bump sbt to 0.13.5
Merge pull request #237 from rubanm/https_sonatype

Https sonatype
Merge remote-tracking branch 'upstream/develop' into develop