Performance fix: created two valueFor functions (one for dictionaries…

… and one for arrays) to remove the need to cast the JSON dictionary input

Casting the dictionary was very slow especially given a large JSON input

- added missing compile sources to tvOS target

- checked out Nimble as submodule

removed extra podspec

Merge pull request tristanhimmelman#207 from Hearst-DD/array-of-arrays

- added ability to parse Arrays of Arrays of Mappable objects

- checking in Carthage checkouts folder

updated version numbers

updated version again

Merge pull request tristanhimmelman#161 from Hearst-DD/remove-init-fr…

…om-mappable

Remove init? from mappable protocol

Merge pull request tristanhimmelman#124 from Hearst-DD/dictionary-of-…

…arrays

Dictionary of arrays