add assets.rb

[JohnSantosuosso]

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other (please describe):

Problem/feature

What problem are you trying to solve?

Solution

How did you solve the problem?
tried solution from here: rmosolgo/graphiql-rails#75

Other changes (e.g. bug fixes, UI tweaks, small refactors)

Checklist

• Tests for the changes have been added (for bug fixes/features)
• All tests passing
• Extended the README / documentation, if necessary

[JohnSantosuosso]

Removed deployment tests, not suitable to be merged--CANCELLED