Add syntax highlighting to readme code snippets

README.md

@@ -14,28 +14,36 @@ Tested against Django 2.2, 3.2 and 4.0 on Python 3.6, 3.7, 3.8, 3.9 and 3.10
 
 Install from PIP
 
-    pip install django-simple-robots
+```bash
+pip install django-simple-robots
+```
 
 In your root urlconf, add an entry as follows:
 
-    from django.conf.urls import url
-    from simple_robots.views import serve_robots
+```python
+from django.conf.urls import url
+from simple_robots.views import serve_robots
 
-    urlpatterns = [
-        path("robots.txt", serve_robots),
-        # ..... other stuff
-    ]
+urlpatterns = [
+    path("robots.txt", serve_robots),
+    # ..... other stuff
+]
+```
 
 Then, add `simple_robots` to `INSTALLED_APPS` in your `settings.py`.
 
 Optionally, set `ROBOTS_ALLOW_HOSTS` settings variable.
 
-    ROBOTS_ALLOW_HOSTS = ["myproductionurl.com"]
+```python
+ROBOTS_ALLOW_HOSTS = ["myproductionurl.com"]
+```
 
 `ROBOTS_ALLOW_HOSTS` also supports multiple options, similar to [`ALLOWED_HOSTS`](https://docs.djangoproject.com/en/stable/ref/settings/#allowed-hosts):
 
-    # Allow all subdomains of `myproductionurl.com` (including the apex) and exactly `myotherproductionurl.com` (no subdomains)
-    ROBOTS_ALLOW_HOSTS = [".myproductionurl.com", "myotherproductionurl.com"]
+```python
+# Allow all subdomains of `myproductionurl.com` (including the apex) and exactly `myotherproductionurl.com` (no subdomains)
+ROBOTS_ALLOW_HOSTS = [".myproductionurl.com", "myotherproductionurl.com"]
+```
 
 That's it!