rename to setup-production.sh

better captures the intent to setup dependencies needed in a production
environment versus development

refs #5
bundle install to ROOT/bin and ROOT/vendor/gems

removed ROOT/.bundle/config; options declared in setup-production.sh

new env vars; OB_GEMBIN_DIR and OB_GEM_DIR

refs #5
bumped Gemfile; bel-0.3.0 from github @master