minor updates
minor updates

- make clear micro-sevices architecture
- make clear that this is implemented as Node.js
- minor small edits
shinji62/cf-abacus,kurumai/cf-abacus,18F/cf-abacus,BetaFood/cf-abacus-dev,KRuelY/cf-abacus,KRuelY/cf-abacus,jsdelfino/cf-abacus-experiment,stefanschneider/cf-abacus,rajkiranrbala/cf-abacus,pombredanne/cf-abacus,cloudfoundry-incubator/cf-abacus,stefanschneider/cf-abacus,danparsons/cf-abacus,jsdelfino/d-abacus,jsdelfino/cf-abacus-experiment,jsdelfino/x-abacus,nmaslarski/cf-abacus,jsdelfino/d-abacus,cloudfoundry-incubator/cf-abacus,jsdelfino/d-abacus,danparsons/cf-abacus,KRuelY/cf-abacus,sasrin/cf-abacus,jsdelfino/x-abacus,BetaFood/cf-abacus-dev,nmaslarski/cf-abacus,sasrin/cf-abacus,rajkiranrbala/cf-abacus,18F/cf-abacus,danparsons/cf-abacus,KRuelY/cf-abacus,18F/cf-abacus,nmaslarski/cf-abacus,rajkiranrbala/cf-abacus,cloudfoundry-incubator/cf-abacus,kurumai/cf-abacus,rajkiranrbala/cf-abacus,BetaFood/cf-abacus-dev,pombredanne/cf-abacus,pombredanne/cf-abacus,jsdelfino/x-abacus,sasrin/cf-abacus,shinji62/cf-abacus,jsdelfino/d-abacus,jsdelfino/x-abacus,nmaslarski/cf-abacus,pombredanne/cf-abacus,jsdelfino/cf-abacus-experiment