Update README.md

Author: matseymour28590

README.md

@@ -19,17 +19,17 @@ $ google-chrome-stable --remote-debugging-port=9899
 
 In a python console, you can connect to the remote debugging port and enable the Page domain.
 ```
->> self.devtools_client = ChromeInterface(9899, domains={"Page": {}})
+>> devtools_client = ChromeInterface(9899, domains={"Page": {}})
 ```
 
 The client provides some devtools interface methods, for example:
 ```
->> with self.devtools_client.set_timeout(10):
-   ... self.devtools_client.take_screenshot("/tmp/screenshot.png")
+>> with devtools_client.set_timeout(10):
+   ... devtools_client.take_screenshot("/tmp/screenshot.png")
 ```
 
 Or more generally you can call remote methods according to the devtools protocol spec (https://chromedevtools.github.io/devtools-protocol/tot/Network), for example
 ```
->> self.devtools_client.execute(domain="Network", method="enable")
->> self.devtools_client.execute("Network", "setUserAgentOverride", {"userAgent": "Test"})
+>> devtools_client.execute(domain="Network", method="enable")
+>> devtools_client.execute("Network", "setUserAgentOverride", {"userAgent": "Test"})
 ````