Broke my site with function.php

Hey,

So I was editing a little php to include google analytics on the function.php document in the editor function of the Nevada theme. I was using this help page:
http://www.wpbeginner.com/beginners-guide/how-to-install-google-analytics-in-wordpress/

This is my site:
http://www.therelationshipmaster.com/

Now Im getting this error message and the site doesnt load:
“Parse error: syntax error, unexpected $end in /home2/msanton/public_html/wp-content/themes/nevada/functions.php on line 590”

I didnt even touch line 590. How can I get the site back? Cant get into the wp-admin either.

Help, thanks