message: Update README.md
  Fix missing comma in code example, as pointed out by
diff: @@ -81,7 +81,7 @@ Client-side schema definitions can be spread throughout the client app project a
  ```js
  module.exports = {
  client: {
  - service: "my-graphql-app"
  + service: "my-graphql-app",
  includes: ["./src/**/*.js"],
  excludes: ["**/__tests__/**"]
  }
  