Setup RSpec enviroment

[nicozar95]

No description provided.

[tagonzalez]

Upon doing a small example I found out that there is no further configuration needed for testing GraphQL queries with RSpec.
I basically opened a new branch from the add-graphql branch and followed this tutorial up to the point when I could test some behavior. I then wrote a RSpec test to see if it worked and it did.

The example can be found in this comparison.

If everything looks okay to everyone, I suggest we close this issue since it seems that there is no extra configuration to be made for testing graphql behavior in RSpec. Once closed, we can also delete the rspec-config branch I pushed to show the example.