Update documentation (ExpediaGroup#328)

Clean up the README and add CONTRIBUTING docs to prepare for the 1.0.0 release

Author: smyrick

CONTRIBUTING.md

@@ -0,0 +1,43 @@
+# Contributing
+
+`graphql-kotlin` is open source and welcomes contributions. We do ask that you help us maintain a clean library and create the best code for everyone to use.
+
+## Build
+You can use Maven to build all the modules from the root directory
+
+```shell script
+mvn clean install
+```
+
+Or you can navigate to each module to build them
+
+## Testing
+
+### Unit Tests
+
+We are using [mockk](http://mockk.io), [JUnit](https://junit.org/junit5/), and [jacoco](https://www.eclemma.org/jacoco/) for our main testing libraries. This ensures we have good code coverage and can easily test all cases of schema generation.
+
+To run tests use Maven
+
+```shell script
+mvn verify
+```
+
+You can also view the code coverage reports published to Codecov. Links in the README
+
+### Linting
+We are also [ktlint](https://ktlint.github.io/) and [detekt](https://arturbosch.github.io/detekt/) for code style checking and linting. These can be run wiht the following Maven commands
+
+**Note**:
+These will be run as part of the `validate` phase of a full build but if you want to run them manually you will have to navigate to each module directory and run the command
+
+```shell script
+mvn antrun:run@ktlint
+```
+```shell script
+mvn antrun:run@detekt
+```
+
+## License
+
+See [LICENSE](LICENSE)

README.md

@@ -7,15 +7,30 @@
 
 GraphQL Kotlin consists of number of libraries that aim to simplify GraphQL integration for Kotlin applications.
 
-## Modules
+## 📦 Modules
 
 * [graphql-kotlin-federation](/graphql-kotlin-federation) - Schema generator extension to build federated GraphQL schemas
 * [graphql-kotlin-schema-generator](/graphql-kotlin-schema-generator) - Code only GraphQL schema generation for Kotlin
 * [examples/spring](/examples/spring) - Example SpringBoot app that uses GraphQL Kotlin schema generator
 * [examples/federation](/examples/federation) - Example Federation module with multiple SpringBoot apps that use GraphQL Kotlin federation generator
 
-## Documentation
+## 📋 Documentation
 
 Examples and documentation are available on our [Uncyclo](https://github.com/ExpediaGroup/graphql-kotlin/wiki) or in each module.
 
 If you have a question about something you can not find in our wiki, the indivdual modules, or javadocs, feel free to [create an issue](https://github.com/ExpediaGroup/graphql-kotlin/issues) and tag it with the question label.
+
+## 👥 Contact
+
+This project is part of Expedia Group open source but also maintained by a dedicated team
+
+* Expedia Group
+  * https://expediagroup.com/
+  * [email protected]
+  
+* `@ExpediaGroup/graphql-kotlin-committers`
+  * Tag us in an issue on Github
+
+## ✏️ Contributing
+
+See more info in [CONTRIBUTING.md](CONTRIBUTING.md)