I have kept running into issues where I have to add my FTP information when attempting to upload a plugin or update anything to certain GoDaddy WordPress installs.
The Fix!
define('FS_METHOD', 'direct');You will need to apply this code above to your wp-config.php file at the bottom.
I wanted to share this and also I cannot say that this is the best way to accomplish this, but if you are dealing with a similar issue where there are limitations on updating plugins or themes based on FTP restrictions this should do the trick.