Google Analytics in index.html

Hello @caizelin - thanks for a great code!

I was wondering whether its okay to have Google Analytics code in the index.html in the open public repo?
I believe, that more than one person would fork or simply download and use the code without changing this and it does not feel right IMHO. 

Maybe adding / enabling this code/script should be part of a release procedure?

Sincerely, 
Marcel