Simplify deploy script to use lein release plugin
Be explicit about which branch to push
remove redundant git line
Merge pull request #32 from cprice404/maint/master/use-lein-release-plugin

Simplify deploy script to use lein release plugin
Bump version to 0.5.2-SNAPSHOT for development
Add JSON utils from PuppetDB.

These include the auto-added joda DateTime encoder, generate-pretty-*
functions, and spit-json. Bring all the tests along too.