Either use the object's own property, or a fallback
Useful for setting default values.
ownOr(object, key, fallback)
var ownOr = require('own-or')
var config = { some: 'configs' }
var foo = ownOr(config, 'bar', 'baz') // 'baz'
var some = ownOr(config, 'some', 'quux') // 'configs'