Tweaking documentation

These changes are minor and trivial but appease the inch-ci monster.

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

Lotus::Controller::Configuration#handle_exceptions=

> Suggestions:
> * Add a comment describing the method.
> * Describe what "handle_exceptions=" returns.
> * Add a code example (optional).

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

Lotus::Controller::Configuration#load!

> Suggestions:
> * Describe what "load!" returns.
> * Describe the parameter "base".
> * Add a code example (optional).

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

Lotus::Action::Cache#cache_control

> * Describe what "cache_control" returns.
> * Describe the parameter "values".

http://inch-ci.org/github/lotus/controller
Merge pull request #50 from jeremyf/improving-documentation

Improving documentation