Do not run Doorkeper's authorization method if oauth2 scope is set to…

… 'false'. Particularily useful when using WineBouncer in the grape-swagger for hiding certain endpoints for different kind of users. In this case oauth2 'false' is set on the GET swagger_doc endpoint making the doorkeeper_access_token available further in the process of building API endpoints.

lib/wine_bouncer/oauth2.rb

@@ -89,7 +89,8 @@ def before
       context.protected_endpoint = endpoint_protected?
       return unless context.protected_endpoint?
       self.doorkeeper_request = env # set request for later use.
-      doorkeeper_authorize!(*auth_scopes)
+      scopes = auth_scopes
+      doorkeeper_authorize!(*scopes) unless scopes.include? :false
       context.doorkeeper_access_token = doorkeeper_token
     end