A small tiny refactor in the logger configuration.
Merge pull request #760 from towanda/tiny-refactor

A small tiny refactor in the logger configuration.
Update Rspec RequestExampleGroup

I get this warning:

```
Deprecation Warnings:

Filtering by an `:example_group` subhash is deprecated. Use the subhash to filter directly instead.
```
I've changed to this new way and It's working very well.
Merge pull request #756 from pragmaticivan/patch-1

Update Rspec RequestExampleGroup
Adds tests for present params with nil and empty

Test added for empty array (valid) and test for nil.
Merge pull request #761 from mynameisrufus/empty-array-require

Support empty array for required params
added spec support for multiple rails versions refs: #763
Merge pull request #764 from dspaeth-faber/run_tests_against_multiple_rails

added spec support for multiple rails versions refs: #763
Fixes small typo and cleans a couple of comments.
Merge pull request #766 from towanda/small-typo

Fixes small typo and cleans a couple of comments.
Adds a spec to check that setting a logger returns a logger.
(See https://github.com/intridea/grape/pull/760)
Removed appraised lock files.
Merge pull request #767 from dblock/appraisal-locks

Removed appraised lock files.
Extracts prepare_routes_requirementes methods.
Extracts prepare_routes_path_params method.
Refactors prepare routes method
fetch without a block.
removes useless assignament.
Merge pull request #770 from towanda/refactor-prepare-routes

Refactor prepare routes method
introduced new desc dsl with a block instead of option Hash