Update wizard.md

Author: TheSonOfThomp

.changeset/wizard.md

@@ -2,4 +2,75 @@
 '@leafygreen-ui/wizard': minor
 ---
 
-Initial Wizard package release
+Initial Wizard package release.
+
+```tsx
+<Wizard>
+  <Wizard.Step>
+    <div>Step 1 contents<div>
+    <Wizard.Footer
+      primaryButtonProps={{
+        children: 'Continue',
+        variant: 'primary'
+      }}
+    />
+  </Wizard.Step>
+
+  <Wizard.Step requiresAcknowledgement>
+    <div>Step 2 contents<div>
+    <Wizard.Footer
+      primaryButtonProps={{
+        children: 'Delete',
+        variant: 'danger'
+      }}
+    />
+  </Wizard.Step>
+</Wizard>
+```
+
+### Wizard
+The `Wizard` component establishes a context with an internal state, and will render only the `activeStep`. 
+
+You can also control the Wizard externally using the `activeStep` and `onStepChange` callback. 
+Note: if you externally control the state, you opt out of the automatic range validation, and you must ensure that the provided `activeStep` index is valid relative to the `Wizard.Step`s provided.
+
+### Wizard.Step
+Defines a discrete step in the wizard. Only the step matching the internal (or provided) `activeStep` index will be displayed.
+
+Both `Wizard` and `Wizard.Step` are only wrapped in a `Fragment` to allow for more versatile styling.
+
+#### `requiresAcknowledgement` 
+
+If `requiresAcknowledgement` is true, the step must have `isAcknowledged` set in context, (or passed in as a controlled prop) for the Footer's primary button to be enabled.
+
+e.g.
+```tsx
+// App.tsx
+<Wizard.Step requiresAcknowledgement>
+  <MyWizardStepContents />
+  <Wizard.Footer
+    primaryButtonProps={{
+      children: 'Delete', // This button will be disabled until the step has been acknowledged
+    }}
+  />
+</Wizard.Step>
+
+// MyWizardStepContents.tsx
+const MyWizardStepContents = () => {
+  const { isAcknowledged, setAcknowledged } = useWizardStepContext();
+
+  return (
+    <>
+      <Checkbox
+        label="Acknowledge"
+        checked={isAcknowledged}
+        onChange={(e)=> setAcknowledged(e.target.checked)}
+      />
+    </>
+  )
+}
+```
+
+### Wizard.Footer
+The `Wizard.Footer` is a convenience wrapper around the `FormFooter` component. Each step should render its own Footer component
+