Update proxy section on readme

Author: elacuesta

README.md

@@ -248,45 +248,6 @@ class AwesomeSpiderWithPage(scrapy.Spider):
   Scrapy request workflow (Scheduler, Middlewares, etc).
 
 
-## Proxy support
-
-Proxies are supported at the Browser level by specifying the `proxy` key in
-the `PLAYWRIGHT_LAUNCH_OPTIONS` setting:
-
-```python
-PLAYWRIGHT_LAUNCH_OPTIONS = {
-    "proxy": {
-        "server": "http://myproxy.com:3128",
-        "username": "user",
-        "password": "pass",
-    },
-}
-```
-
-You can also set proxies per context with the `PLAYWRIGHT_CONTEXTS` setting:
-
-```python
-PLAYWRIGHT_CONTEXTS = {
-    "default": {
-        "proxy": {
-            "server": "http://default-proxy.com:3128",
-            "username": "user1",
-            "password": "pass1",
-        },
-    },
-    "alternative": {
-        "proxy": {
-            "server": "http://alternative-proxy.com:3128",
-            "username": "user2",
-            "password": "pass2",
-        },
-    },
-}
-```
-
-See also the [upstream Playwright section](https://playwright.dev/python/docs/network#http-proxy)
-on HTTP Proxies.
-
 ## Multiple browser contexts
 
 Multiple [browser contexts](https://playwright.dev/python/docs/browser-contexts)
@@ -355,6 +316,60 @@ async def parse_in_new_context(self, response):
 ```
 
 
+## Proxy support
+
+Proxies are supported at the Browser level by specifying the `proxy` key in
+the `PLAYWRIGHT_LAUNCH_OPTIONS` setting:
+
+```python
+from scrapy import Spider, Request
+
+class ProxySpider(Spider):
+    name = "proxy"
+    custom_settings = {
+        "PLAYWRIGHT_LAUNCH_OPTIONS": {
+            "proxy": {
+                "server": "http://myproxy.com:3128"
+                "username": "user",
+                "password": "pass",
+            },
+        }
+    }
+
+    def start_requests(self):
+        yield Request("http://httpbin.org/get", meta={"playwright": True})
+
+    def parse(self, response):
+        print(response.text)
+```
+
+You can also set proxies per context with the `PLAYWRIGHT_CONTEXTS` setting:
+
+```python
+PLAYWRIGHT_CONTEXTS = {
+    "default": {
+        "proxy": {
+            "server": "http://default-proxy.com:3128",
+            "username": "user1",
+            "password": "pass1",
+        },
+    },
+    "alternative": {
+        "proxy": {
+            "server": "http://alternative-proxy.com:3128",
+            "username": "user2",
+            "password": "pass2",
+        },
+    },
+}
+```
+
+Or passing a `proxy` key when [creating a context during a crawl](#creating-a-context-during-a-crawl).
+
+See also the [upstream Playwright section](https://playwright.dev/python/docs/network#http-proxy)
+on HTTP Proxies.
+
+
 ## Executing actions on pages
 
 A sorted iterable (`list`, `tuple` or `dict`, for instance) could be passed