Loopback REST opt-in

Use this module to choose which automatically generated Loopback REST endpoints to enable rather than which to disable

Opt-in for REST methods
``javascript
var coOptIn = require('co-loopback-rest-opt-in')
coOptIn.enable(MyModel, [
'create',
'findById'
])
// create, deleteById, findById, upsert, find, exists,
// updateAll, createChangeStream, count, findOne,
// updateAttributes
`

Opt-in for REST methods for related resources
`javascript
var coOptIn = require('co-loopback-rest-opt-in')
coOptIn.enableRelated(MyModel, 'RelatedModel', [
'create',
'destroyById'
])
// create, destroyById, updateById, get, findById,
// delete, count
``