Move get cookie to installation in readme

README.md

@@ -39,14 +39,10 @@ Change working directory:
 cd TimelineExtractor/src
 ```
 
-## Usage
-
 ### Authentication
 
 In order to download location history from Google Maps, you must be authenticated. Authentication is done by passing an authentication cookie to `TimelineExtractor`.
 
-#### Get authentication cookie
-
 Follow the steps below to get your authentication cookie from Google Maps Timeline:
 
 1. Go to [Timeline](https://www.google.com/maps/timeline) using [Google Chrome](https://www.google.com/chrome/) or another Chromium-based browser.
@@ -71,7 +67,9 @@ curl "https://www.google.com/maps/timeline/kml?authuser=0^&pb=^!1m8^!1m3^!1i2020
 
 8. Save the cookie content (what is replaced by `<COOKIE CONTENT>` above) so you can use it to authenticate requests sent by `TimelineExtractor` when downloading location history. It is recommended to store it in a file called `cookie` in the directory `src`, as that will be assumed in most of the examples further down.
 
-#### Authenticate
+## Usage
+
+### Authenticate
 
 To authenticate, specify the path to your authentication cookie using the `-c` or `--cookie` argument when running `TimelineExtractor`: