doc updates

Author: proxymesh

README.md

@@ -1,24 +1,30 @@
-The `scrapy-proxy-headers` package is designed for adding proxy headers to HTTPS requests.
+# Scrapy Proxy Headers
+
+The `scrapy-proxy-headers` package is designed for adding proxy headers to HTTPS requests in [Scrapy](https://scrapy.org/).
 
 In normal usage, custom headers put in `request.headers` cannot be read by a proxy when you make a HTTPS request, because the headers are encrypted and passed through the proxy tunnel, along with the rest of the request body. You can read more about this at [Proxy Server Requests over HTTPS](https://docs.proxymesh.com/article/145-proxy-server-requests-over-https).
 
-Because Scrapy does not have a good way to pass custom headers to a proxy when you make HTTPS requests, we at [ProxyMesh](https://proxymesh.com) made this extension to support our customers that use Scrapy and want to use custom headers to control our proxy behavior. But this extension can work for any custom headers through a proxy.
+Because Scrapy does not have a good way to pass custom headers to a proxy when you make HTTPS requests, we at [ProxyMesh](https://proxymesh.com) made this extension to support our customers that use Scrapy and want to use custom headers to control our proxy behavior. But this extension can work for handling custom headers through any proxy.
+
+## Installation
 
 To use this extension, do the following:
 
 1. `pip install scrapy-proxy-headers`
-2. In your Scrapy `settings.py`, add the following code:
+2. In your Scrapy `settings.py`, add the following:
 
 ```python
 DOWNLOAD_HANDLERS = {
   "https": "scrapy_proxy_headers.HTTP11ProxyDownloadHandler"
 }
 ```
 
-3. When you want make a request with a custom proxy header, instead of using `request.headers`, use `request.meta["proxy_headers"]` like this:
+## Usage
+
+When you want make a request with a custom proxy header, instead of using `request.headers`, use `request.meta["proxy_headers"]` like this:
 
 ```python
 request.meta["proxy_headers"] = {"X-ProxyMesh-Country": "US"}
 ```
 
-4. Any response headers that might come from the proxy will be saved in `response.headers`
+Any response headers that might come from the proxy will be saved in `response.headers`, as in `response.headers["X-ProxyMesh-IP"]`.