Renamed bloggerSpritzer.js to bloggerSpritzer.html

after looking at my code, I came to the conclusion, that even though it is
all js, I have them in HTML tags so they can be inserted into a Gadget in
Blogger.

Potentially later I might in the future (as I refactor for general use)
into two js files and a html file linking them. Or I wont.. I don't know
what will work the best