Leverage browser caching resources: Social Media

Hi,

I installed your plugin but there is leverage browser caching for all cacheable resources: Social Media

Google Page Speed

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://assets.pinterest.com/js/pinit.js (3.2 minutes)
https://assets.pinterest.com/js/pinit_main.js?0.34399502584710717 (4.5 minutes)
https://syndication.twitter.com/settings (10 minutes)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://apis.google.com/js/platform.js (30 minutes)
https://apis.google.com/js/plusone.js (30 minutes)
https://maps.googleapis.com/maps/api/js?v=3.exp& (30 minutes)
https://platform.twitter.com/widgets.js (30 minutes)

How to fix this right?

Best regards,

Joris

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