Pin the Splat dependency in the nuspec file to the same version we're building Akavache with
Pin the Splat dependency in the nuspec file to the same version we're building Akavache with

Fixes #206

bbqchickenrobot/Akavache,PureWeen/Akavache,akavache/Akavache,mms-/Akavache,ghuntley/AkavacheSandpit