[added] connecting nodes

Merge branch 'master' of https://github.com/nishchalraj/GraphQL-with-rubyonrails

[added] basic authentication

[added] test and authentication

Deleted config

[added] gitignore

[added] gitignore

[added] mutations

[added] queries

[done] basic setup for graphql-ruby

[added] graphql-tutorial

Updated Readme.md

[initial] repo