Well it appears that you are just invoking the JavaScript. You must place the JavaScript into an HTML Document and then have an element that corresponds with that script.
Remember you also have to have a full structured HTML Document before you can just place Script tags into it, you need html, body, head, tags, etc.
Try creating an HTML Document and placing this within the .html file.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<script src="//platform.linkedin.com/in.js" type="text/javascript"></script>
<script type="IN/FollowCompany" data-id="361557" data-counter="right"></script>
</body>
</html>
Tips to remember:
- A lot of scripts require an element to correspond with.
- You may either place the script within the script tags in the body
tags or the head tags, depending on if you may or may not be
selecting an element on the page.
- Each HTML document requires the correct mark-up before a browser
can render it.
Hope this helps!
EDIT:
Just upload it to a server, once you do that, it will work. I cannot explain why though.