Create README.md (#187)

Author: smyrick

example/README.md

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+# graphql-kotlin example
+
+One way to run a GraphQL server is with spring boot. This example app uses `graphql-kotlin`, `graphql-java-servlet` and `graphiql`.
+
+
+### Running locally
+Build the application
+
+```bash
+mvn clean install
+```
+
+Start the server:
+
+* Run `Application.kt` directly from your IDE
+* Alternatively you can also use the spring boot maven plugin by running `mvn spring-boot:run` from the command line.
+
+
+Once the app has started you can explore the example schema by opening GraphiQL endpoint at http://localhost:8080/graphiql.