Re-land: Fastify integration from #1971.

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### vNEXT
 
+- `apollo-server-fastify` is now on Apollo Server and lives within the `apollo-server` repository.  This is being introduced in a _patch_ version, however it's a _major_ version bump from the last time `apollo-server-fastify` was published under `1.0.2`.  [PR #1971](https://github.com/apollostack/apollo-server/pull/1971)
 - Move `apollo-graphql` package to the `apollo-tooling` repository [PR #2316](https://github.com/apollographql/apollo-server/pull/2316)
 
 ### v2.4.1

README.md

@@ -86,6 +86,7 @@ Often times, Apollo Server needs to be run with a particular integration. To sta
 - `apollo-server-express`
 - `apollo-server-koa`
 - `apollo-server-hapi`
+- `apollo-server-fastify`
 - `apollo-server-lambda`
 - `apollo-server-azure-functions`
 - `apollo-server-cloud-functions`
@@ -235,6 +236,25 @@ new ApolloServer({
 })
 ```
 
+## Fastify
+
+```js
+const { ApolloServer, gql } = require('apollo-server-fastify');
+const { typeDefs, resolvers } = require('./module');
+
+const server = new ApolloServer({
+  typeDefs,
+  resolvers,
+});
+
+const app = require('fastify')();
+
+(async function () { 
+  app.register(server.createHandler());
+  await app.listen(3000);
+})();
+```
+
 ### AWS Lambda
 
 Apollo Server can be run on Lambda and deployed with AWS Serverless Application Model (SAM). It requires an API Gateway with Lambda Proxy Integration.