feat(nickel): Added a println of IP:Port when the server starts listening for requests.
Merge pull request #124 from infinitus/master

feat(nickel): Added a println of IP:Port when the server starts listening for requests.
fix(SendStr): MaybeOwned is depreciated in favor of Cow pointers
fix(RequestUri): adjust for upstream namespacing changes
fix(mimes): adjust for enum namespacing changes