Update documentation to follow redirection headers from server.

As I noted in issue #85 since the [universal SSL](http://blog.cloudflare.com/introducing-universal-ssl/) system was turned on at cloudflare anyone using the older function declaration which only used http will get the following html block in stead of their .gitignores.

```
<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>cloudflare-nginx</center>
</body>
</html>
```

To prevent this, more for any future instances of server movement, I suggest we add -L to the curl command to follow any redirections indicated by the server.

I tested this with http and it works well. Although there might be some performance hit for the extra steps taken to get the correct endpoint.

There may be a way within your server to detect these changes and prompt the user to update their configuration though. 

This resolves issue #85