[To Do] Use CI instead of TravisCI in our script and documentation

[benoittgt]

Migration to Github Actions is not completely done but we still have lot's of mentions of TravisCI. https://github.com/rspec/rspec-rails/search?q=travis

Some work has been done on rspec-dev. We should follow the work done on other repo.

[JonRowe]

The markdown files in dev use a generator style to allow injecting project names, we could expand that to allow it to generate the rspec-rails docs and bring the common sections inline with the other projects which would help, we could also look at using the style of ignores I build for those files for ci builts, allowing us to sync the function files but not the workflow itself?

[Maroo-b]

Hi @benoittgt , do we need to just rename "travis" -> "ci" in this case?

[benoittgt]

@Maroo-b yes at first. Then we could look at the @JonRowe 's proposal. This is probably need more some work with how much rspec-rails is unsync from other RSpec repos.

[benoittgt]

Closed by #2489