devops: add support for postgres databases
devops: make project Heroku deployable with gunicorn/gevent
devops: add some deployment/provisioning fixes

 - fix project root detection from runcommands.sh
 - add the sandalstrap project bootstrapper as sandalstrap.sh
 - explicitly check for CoffeeScript and JRE
 - remove readline from requirements
    Shouldn't be there in the first place, it's just a sad artifact of
    development on OSX.
readme: add detailed project README