Merge pull request #2 from bekzod/patch-1

cb instead of next

Release v0.0.5

Add `redirectUrl` option parameter

Release v0.0.4

Call error handler with the correct error

bump to 0.0.3

change onAuth signature to (req, res, shop, token, done)

release 0.0.2

call onError if onAuth calls back with an error

updated package.json

changed `onAuth` callback signature

updated dev section

added usage examples

initial commit