Tweak heading levels in README
@@ -274,7 +274,7 @@ app = BroadCastMiddleware(my_app, 'localhost', 6379)
This will make a `groups` channel available, which accepts the following
messages:
-### Add
+#### Add
```python
await channels['groups'].send({
@@ -285,7 +285,7 @@ await channels['groups'].send({
Add a channel to the given group.
-### Discard
+#### Discard
```python
await channels['groups'].send({
@@ -296,7 +296,7 @@ await channels['groups'].send({
Remove a channel from the given group.
-### Send
+#### Send
```python
await channels['groups'].send({
