load config files with same name as branch on build
add segmentio + config for prod
apparently `/usr/bin/env` isn't as portable as I had presumed
fix branch name in s3 command
add basic tracking
Merge branch 'basic-tracking'
hoopla domain is now a config variable
Merge branch 'template-domain-agnosticism'
do not allow undefined vars in build script
Merge branch 'master' into staging