feat: add support of new instagram and facebook api

[shobhitsharma]

What?

Facebook Graph API introduced new oembed endpoints which includes access_token parameter, for both server and client side embeds. Developers manually have to generate those token and use in respective apps/websites based on format {app-id}|{client-token}. See docs below for more info:

• https://developers.facebook.com/docs/plugins/oembed/
• https://developers.facebook.com/docs/instagram/oembed/

🎉 To embed facebook or instagram posts, it is required to set access_token property globally or in single instance. This will automatically injected to all embed URLs called with the embedo's instance. No other breaking changes.

// facebook initialize options
new Embedo({
  facebook: {
    appId: {your-app-id},
    access_token: {your-app-id|your-client-token}
  }
});

// instagram initialize options
new Embedo({
  instagram: {
    access_token: {your-app-id|your-client-token}
  }
});

Why?

Closes #25

Screenshots

Requests 200 OK

Embed Test Screenshots