README.md in quilt_rails-1.9.2 vs README.md in quilt_rails-1.10.0

@@ -298,9 +298,70 @@
 }
 
 export default App;
 ```
 
+##### Example: sending headers from Rails controller
+
+```ruby
+class ReactController < ApplicationController
+  include Quilt::ReactRenderable
+
+  def index
+    render_react(headers: { 'x-custom-header': 'header-value-a' })
+  end
+end
+```
+
+You will need to serialize the result of the useRequestHeader hook in order for it to persist to the client
+
+```tsx
+// app/ui/foundation/CustomUniversalProvider.tsx
+import {createContext} from 'react';
+import {createUniversalProvider} from '@shopify/react-universal-provider';
+
+export const CustomContext = createContext<string | null>(null);
+export const CustomUniversalProvider = createUniversalProvider('custom-key', CustomContext);
+```
+
+```tsx
+// app/ui/index.tsx
+
+import React from 'react';
+import {useRequestHeader} from '@shopify/react-network';
+import {CustomUniversalProvider} from './foundation/CustomUniversalProvider';
+import {ComponentWithCustomHeader} from './components/ComponentWithCustomHeader';
+
+function App() {
+  // get `x-custom-header` from the request that was sent through Rails ReactController
+  const customHeader = useRequestHeader('x-custom-header');
+
+  return (
+    <CustomUniversalProvider value={customHeader}>
+      <h1>My application ❤️</h1>
+      <ComponentWithCustomHeader />
+    </CustomUniversalProvider>
+  );
+}
+
+export default App;
+```
+
+```tsx
+// app/ui/components/ComponentWithCustomHeader.tsx
+
+import React, {useContext} from 'react';
+import {CustomContext} from '../foundation/CustomUniversalProvider';
+
+export function ComponentWithCustomHeader() {
+  // get `x-custom-header` from serialized context
+  // will be 'header-value-a' in this example
+  const customHeader = useContext(CustomContext);
+
+  return <span>{customHeader}</span>;
+}
+```
+
 ##### Example: redirecting
 
 ```tsx
 // app/ui/index.tsx