Batch write on deploy, & compatibility with serverless-dynamodb-local

[mattfysh]

Hey @marc-hughes - nice job on this plugin!

I'm wondering if there's a way to have the batch write perform on sls deploy, after the cloudformation stack has completed?

Also is there an easier way to share entries between this plugin and serverless-dynamodb-local? Right now I'm pointing the latter to a .js file with this sort of code:

module.exports = require('../fixtures/events').entries;

Thoughts?