Created Chef data bag full o' secrets
Fix Rakefile deps for prod/staging
Typo fix
Use myusa user for deployment
Data bag example & instructions

Also improved ec2 node JSON docs
Better Chef node example files
Remove redundancy in cap configs
More docs and environment tweaks
Moved secrets.yml.example into kitchen/ to declutter root
Merge branch 'devel' into feature/data-bags
Ensure nginx config dir exists

Also Shippable+CodeClimate fix
Create public/system dir

Remove "deployer" attar from Capistrano
Merge pull request #224 from 18F/feature/data-bags

Feature/data bags