We need to add a publish image/video section without usage of the BinaryAttachment

[nbartels]

Publishing file with file_url parameter instead of a BinaryAttachment

restfb/restfb#606

[nbartels]

Publish image example

DefaultFacebookClient client =
        new DefaultFacebookClient(pageAccessToken, Version.VERSION_2_5);
JsonObject result = 
     client.publish("<page id>/photos", 
             JsonObject.class,
             Parameter.with("message", "This is a cool test image"), 
             Parameter.with("url",imageUrl)
      );

[nbartels]

Publish video example

DefaultFacebookClient client =
        new DefaultFacebookClient(pageAccessToken, Version.VERSION_2_5);
JsonObject result = 
         client.publish("<page id>/videos", 
               JsonObject.class,
               Parameter.with("message", "This is a cool test video"),            
               Parameter.with("file_url",imageUrl)
         );