update readme

README.md

@@ -1,16 +1,18 @@
-# linkbomber
+# Linkbomber
 
 Discord bot that cleans tracking elements from messages
 
 You can invite the bot to your server [here](https://discord.com/oauth2/authorize?client_id=1336105313589395616&scope=bot&permissions=67584).
 
-![graphic showing how YouTube source identifiers work](img/sourceidentifier.jpeg)
+## About
+
+![graphic showing how YouTube source identifiers work](img/sourceidentifier.png)
 
 Many websites use tracking elements in the URL (e.g. `https://example.com?utm_source=newsletter1&utm_medium=email&utm_campaign=sale`)  to mark your online activity. All those tracking codes are not necessary for a website to be displayed or work correctly and can therefore be removed—that is exactly what Linkbomber does. 
 
 Another common example are Amazon URLs. If you search for a product on Amazon you will see a very long URL, such as `https://www.amazon.com/dp/exampleProduct/ref=sxin_0_pb?__mk_de_DE=ÅMÅŽÕÑ&keywords=tea&pd_rd_i=exampleProduct&pd_rd_r=8d39e4cd-1e4f-43db-b6e7-72e969a84aa5&pd_rd_w=1pcKM&pd_rd_wg=hYrNl&pf_rd_p=50bbfd25-5ef7-41a2-68d6-74d854b30e30&pf_rd_r=0GMWD0YYKA7XFGX55ADP&qid=1517757263&rnid=2914120011`
 
-Indeed most of the above URL is tracking code. Once Linkbomber has cleaned the address, it will look like this:
+Indeed most of the above URL are tracking codes. Once Linkbomber has cleaned the address, it will look like this:
 `https://www.amazon.com/dp/exampleProduct`
 
 ## Usage