Update readme and fix linter issue

.gitignore

@@ -10,7 +10,6 @@ lib
 
 # testing
 /coverage
-.jest
 
 # production
 /build

README.md

@@ -28,9 +28,9 @@ The Design System tech lead and Product Designers are the main decision makers &
 
 ### Set up local variables
 
-After cloning the repo, create `.npmrc` and `.env` files in the root level directory, as well as a `.jest` directory with a file named `setEnvVars.js` inside. These gitignored files will store our auth tokens and other local variables.
+After cloning the repo, create `.npmrc` and `.env` files in the root level directory. These gitignored files will store our auth tokens and other local variables.
 
-Copy the respective contents of into each new file from the `Design System local variables` note located in our password manager (1Password).
+Copy the respective contents into each new file from the `Design System local variables` note located in our password manager (1Password).
 
 ### `yarn install`
 

src/hoc/withTrackedClick.jsx

@@ -8,13 +8,13 @@ export default function withTrackedClick(Target) {
 
     const { eventData, event, ...rest } = props;
 
-    function handleClick(clickEvent) {
+    const handleClick = (clickEvent) => {
       props.tracking.trackEvent({ ...eventData, event });
 
       if (props.onClick) {
         props.onClick(clickEvent);
       }
-    }
+    };
 
     return <Target {...rest} onClick={handleClick} />;
   };