Support cta_text attribute for SendToMessenger

[srameshr]

[srameshr]

Here is a PR: https://github.com/seeden/react-facebook/pull/169

[srameshr]

@seeden

[AlexSapoznikov]

@seeden When could this possibly become available?

[AlexSapoznikov]

For anyone trying to use cta_text right now, here's a workaround for now:

<Parser>
    {
      () => (
        <div className="fb-send-to-messenger"
             messenger_app_id={appId}
             page_id={pageId}
             data-ref={dataRef}
             cta_text="GET_THIS_IN_MESSENGER"
             data-size="xlarge"
             color="white"
        />
      )
    }
</Parser>

[seeden]

added in latest release