3ad51a1 [getfedora.org] add metadata for facebook and twitter

Authored and Committed by ryanlerch 6 years ago
    [getfedora.org] add metadata for facebook and twitter
    
    this adds a new image for use on social media sites
    to promote getfedora.org. Also adds twitter cards and
    OGP metadata for twitter and Facebook.
    
    fixes #634
    
        
empty file added