Update restrooms API for newer grape and grape-swagger (enables support for the OpenAPI 2.0 spec)

[DeeDeeG]

Context

The latest grape and grape-swagger gems would update our API to the OpenAPI spec version 2.0. We should double-check to make sure our API works as expected with the OpenAPI 2.0 specification and format.

Impact

Allows us to confidently use up-to-date grape and grape-swagger gems.

How to actually do this

Change this file I think: https://github.com/RefugeRestrooms/refugerestrooms/blob/ee25f6af625d06269c77377a3ea594308a644de4/app/controllers/api/v1/restrooms.rb

For upgrading to match the new grape gem, see:
https://github.com/ruby-grape/grape/blob/master/UPGRADING.md

For upgrading to match the new grape-swagger gem, see:
https://github.com/ruby-grape/grape-swagger/blob/master/UPGRADING.md

[DeeDeeG]

Whoops, it seems like this is actually not a problem.

#506 works just fine, and that pairs our current API code with the new and updated grape and grape-swagger Gems. If we can confirm this isn't a problem, it's fine to close this issue.

[DeeDeeG]

I updated this issue to more accurately reflect the situation. We can optionally go in and make sure this works 100% perfectly with the new gems. But it already works fine apparently in #506.

I think addressing this issue can only really affect the docs page. The results given by the API (actual json-formatted restroom entries) in PR #506 look the same as before, at least to my eyes.

[DeeDeeG]

Our API code doesn't appear to need any changes after all. I suppose we weren't using any off-the-beaten-path features of the grape and grape-swagger gems.

Closing this issue.