Dish Network’s much-hyped Sling TV streaming service is now officially available to the public, and the company has furthered sweetened the deal by adding popular network AMC to the core $20 channel lineup, just in time for the new season of the network’s biggest draw, The Walking Dead.The latest agreement for the pioneering Web TV service includes the entire AMC portfolio – AMC, BBC AMERICA, BBC World News, IFC, SundanceTV and WE tv. Just how the additional channels that come with the AMC deal will be divvied up remains to be seen.Sling TV offers access to live streaming television from a variety of channels, including ESPN, ESPN2, TNT, TBS, Food Network, HGTV, Cartoon Network, ABC Family, Disney Channel, and now AMC, for a flat fee of $20 per month.For sports fans, an extra $5/month secures the new “Sports Extra” pack, which includes a variety of ESPN add-on channels, as well as options like SEC Network, and Universal Sports. There’s also a “Kids Extra,” bundle, and a “News & Info Extra” pack, both available for $5 each, as well. Or you can get the whole she-bang for $35/month – still considerably less than you’d pay for most basic cable/satellite TV packages.Related: Try Sling TV free…