Add a chef cookbook for deployment and configuration of RippleCharts API

This pull request provides a chef cookbook for the automated deployment and configuration of the RippleCharts API. It currently compiles nodeJS 0.10.25 from source, installs NPM, installs the appropriate dependencies, checks out v2.0 HEAD and then creates an upstart script which runs node as www-data. It currently doesn't test for the server being up at the end of the run, but will do so once a /ping URL has been added which returns a 200 OK. (Pending another pull request/issue open).