Addressing Inch CI's suggestion

Lotus::Action::Cache#fresh

> Suggestions:
>
> * Describe what "fresh" returns.
> * Describe the parameter "options".

http://inch-ci.org/github/lotus/controller
Addressing Inch CI's suggestion

Lotus::Action::Cache#expires

> * Describe what "expires" returns.
> * Describe the parameter "amount".
> * Describe the parameter "values".

http://inch-ci.org/github/lotus/controller