more clarification in readme

Author: dwwoelfel

README.md

@@ -26,15 +26,7 @@ Install dependencies
 yarn install
 ```
 
-Start the server
-
-```
-yarn start
-```
-
-The project will load at [http://localhost:3000](http://localhost:3000).
-
-### Running the Relay compiler
+### Run the Relay compiler
 
 This project uses Relay as its GraphQL client because of its high-quality compiler and great support for persisted queries.
 
@@ -52,6 +44,18 @@ OG_GITHUB_TOKEN='<your-github-token>' \
 
 You may need to install [watchman](https://facebook.github.io/watchman/), a file watching service. On mac, do `brew install watchman`. On Windows or Linux, follow the instructions at [https://facebook.github.io/watchman/docs/install.html](https://facebook.github.io/watchman/docs/install.html).
 
+
+### Start the server
+
+Now that we've generated the relay files, we can start the server.
+
+```
+yarn start
+```
+
+The project will load at [http://localhost:3000](http://localhost:3000).
+
+
 ## Deploying
 
 The project comes with setups for deploying to Google's Firebase, Zeit's Now, Netlify, and Fly.io.

src/Post.js

@@ -24,6 +24,8 @@ import {lowerCase, sentenceCase} from 'change-case';
 
 import type {Post_post} from './__generated__/Post_post.graphql';
 
+// n.b. no persistedQueryConfiguration for these mutations, because we want to
+// add reactions on behalf of the logged-in user, not the persisted auth
 const addReactionMutation = graphql`
   mutation Post_AddReactionMutation($input: GitHubAddReactionInput!) {
     gitHub {