If you are having issues uploading your plugin to your WP Site you may see an error message similar to the one below :
"The uploaded file exceeds the upload_max_filesize directive in php.ini"
This is a very easy problem to fix and the reason why you are seeing such a message is because the WP Plugin File you are uploading is bigger than the maximum upload file size that your site will allow.
To fix this simply email your Host and ask them to increase your Upload Limit to something like 8MB. That is more than enough for the majority of themes and plugins you will be using and once done you'll be able to install your plugin without any trouble.