Set mime type to HTML so this can be previewed on GitHub, and onload function

[mmdolbow]

Allen:
GitHub codebases often function best when pages can also be viewed "live". To the best of my knowledge, this can be achireved by setting the MIME type of a file like GoogleMapExample_exit.html to HTML. Then, the link https://rawgit.com/cheetah90/EnrouteTask/master/GoogleMapExample_exit.html will function.

Also, I'm thinking the body tag needs an onload="initialize()" tag in order for the initialize function to get fired when the body of the HTML page has loaded.
Cheers,
mike