v1.0.0 - GraphQL example without a database

Summary

This is the simplest reasonable example with GraphQL without any database and hence focus on GraphQL.

What's Changed

• Simplify macro by @oberning in #1
• Use lazy_static macro for persons vector by @oberning in #2
• Add simple mutation example by @oberning in #3

New Contributors

• @oberning made their first contribution in #1

Full Changelog: https://github.com/oberning/rust_graphql_example/commits/v1.0.0