Merge pull request #43 from xStrom/master

Now properly updating memcache after datastore even in transactions.
Added the ability to change how the Kind is determined on an Entity, on a per Goon instance basis, through
and function stored on Goon, the KindNameResolver.
This is without having to specify Kind() values on each Entity individually.
Merge pull request #44 from markmandel/feature/kind-function

Add the ability to change how the Kind is determined on an Entity, on a per Goon instance basis.