Document Swagger UI Versions

[pieterocp]

Currently, I'm having a troublesome defect with duplicated URLs, but to know which version of Swagger UI is inside the minified file would be helpful since currently the only way (as far as I can tell) is to go to the most recent PR that updates this - https://github.com/ruby-grape/grape-swagger-rails/pull/67/files - make a guess vs some version numbers and releases dates. It might be helpful to commit the version of the swagger UI / have bundle exec rake swagger_ui:dist:update append this so the minified version isn't as hard to version.

[dblock]

Makes sense, please contribute @pieterocp!

[pieterocp]

Well, anything up to 2.2.10 doesn't result in any differences, but once I try to load in 3.0.*, very different so will require some changes to load it in.