Allow `perform_async`

When passing 0 as delay in schedule_create_or_update, the method perform_async will be used instead of perfom_in. This helps with syncs that are dependent on one another.

Delay execution

Merge pull request #50 from wponrails/feature/delay-jobexecution

READY: Using perfom_in instead of perform_async

Add unpublish method

Merge pull request #46 from wponrails/feature/unpublish

[READY] Add unpublish method

WordPress ACF options

WordPress options are a little different than WP post types.
This release allows for synchronising with WordPress options (ACF options).

This feature was previously based on v1.3.0 and was tagged as v1.4.0. This release combines this feature with the new configuration method of v2.0.0 and up.

wp-connector scoped configuration

Rails version prior to 4.2 do not support 'x configuration'.

Add Redirection redirects

This release adds support for the popular WordPress Redirection plugin by adding a concern for Redirects.

https://wordpress.org/plugins/redirection/

V1.0.1: Merge pull request #21 from hoppinger/feature/clean_up

Feature/clean up

V1.0.0

Update README.md